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Astronomy Picture of the Day -- Cataclysmic Dawn [art]
NASA ^
| January 11, 2015
| (see photo credit)
Posted on 01/11/2015 11:49:40 AM PST by SunkenCiv
Explanation: Will this dawn bring another nova? Such dilemmas might be pondered one day by future humans living on a planet orbiting a cataclysmic variable binary star system. Cataclysmic variables involve gas falling from a large star onto an accretion disk surrounding a massive but compact white dwarf star. Explosive cataclysmic events such as a dwarf nova can occur when a clump of gas in the interior of the accretion disk heats up past a certain temperature. At that point, the clump will fall more quickly onto the white dwarf and land with a bright flash. Such dwarf novas will not destroy either star, and may occur irregularly on time scales from a few days to tens of years. Although a nova is much less energetic than a supernova, if recurrent novas are not violent enough to expel more gas than is falling in, mass will accumulate onto the white dwarf star until it passes its Chandrasekhar limit. At that point, a foreground cave may provide little protection, as the entire white dwarf star will explode in a tremendous supernova.
(Excerpt) Read more at 129.164.179.22 ...
TOPICS: Astronomy; Astronomy Picture of the Day; Science
KEYWORDS: apod; astronomy; science
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[ Illustration Credit & Copyright: Mark A. Garlick (Space-art.co.uk)]
1
posted on
01/11/2015 11:49:40 AM PST
by
SunkenCiv
Astronomy Picture of the Day Archive - A -
- August 31 1998: A3827: Cluster Cannibal
- 2003 February 08: AB Aurigae: How To Make Planets
- June 11 1999: AB Aurigae: How To Make Planets
- 2003 January 09: Abell 1689 Warps Space
- 2000 December 08: Abell 1795: A Galaxy Cluster's Cooling Flow
- 2000 March 06: Abell 2142: Clash of the Galaxy Clusters
- 2010 June 20: Abell 2218: A Galaxy Cluster Lens
- 2008 February 10: Abell 2218: A Galaxy Cluster Lens
- 2001 October 07: Abell 2218: A Galaxy Cluster Lens
- 2000 February 01: Abell 2218: A Galaxy Cluster Lens
- January 11 1998: Abell 2218: A Galaxy Cluster Lens
- July 10 1995: Abell 2218: A Galaxy Cluster Lens
- 2002 January 16: Abell 2597's Cosmic Cavities
- 2011 June 29: Abell 2744: Pandora's Cluster of Galaxies
- February 18 1996: Abell 3627 in the Great Attractor
- 2009 September 21: Abell 370: Galaxy Cluster Gravitational Lens
- 2010 July 01: Above Aurora Australis
- 2009 May 20: Above Earth Fixing Hubble
- 2008 April 23: Above the Clouds
- 2004 September 15: Above the Eye of Hurricane Ivan
- December 19 1999: Accretion Disk Binary System
- December 26 1995: Accretion Disk Binary System
- 2005 March 12: Accretion Disk Simulation
- 2002 September 27: Accretion Disk Simulation
- 2011 November 29: Across the Center of Centaurus A
- 2008 March 28: Across the Universe
- 2013 November 16: Active Comet ISON
- 2008 January 10: Active Galaxy Centaurus A
- 2008 August 22: Active Galaxy NGC 1275
- 2008 September 24: Active Region 1002 on an Unusually Quiet Sun
- June 16 1998: An Active Region of the Sun
- 2000 June 08: Active Regions, CMEs, and X-Class Flares
- 2013 November 11: An Active Sun During a Total Eclipse
- 2007 April 02: An Active Sunspot Viewed Sideways
- 2004 January 21: Adirondack Rock on Mars
- 2013 January 07: AE Aurigae and the Flaming Star Nebula
- 2011 March 11: AE Aurigae and the Flaming Star Nebula
- 2009 January 26: AE Aurigae and the Flaming Star Nebula
- 2005 October 18: AE Aurigae: The Flaming Star
- 2001 December 04: AE Aurigae: The Flaming Star
- 2000 February 02: Aeolian Mars
- February 18 1999: Aerogel For Stardust
- 2001 August 29: AFGL 2591: A Massive Star Acts Up
- May 28 1998: Afterglow
- 2001 July 09: Air Pollution Earth
- 2012 September 05: Airglow Over Germany
- 2012 September 06: Airglow over Italy
- 2014 September 01: Airglow Ripples over Tibet
- 2013 April 20: Airglow, Gegenschein, and Milky Way
- 2008 April 29: Airplane Flight Patterns over the USA
- 2010 September 29: An Airplane in Front of the Moon
- 2001 January 29: An Airplane in Front of the Sun
- July 24 1998: Alan B. Shepard Jr. 1923-1998
- 2013 December 28: Alaska Aurora Sequence
- 2013 January 26: Alaskan Moondogs
- 2006 June 07: An Alaskan Volcano Erupts
- 2000 January 08: Albert Einstein Describes Space and Time
- September 27 1998: Albert Einstein Describes Space and Time
- 2005 April 22: Albert Einstein's Miraculous Year
- December 19 1995: Albert Einstein: 1879 - 1955
- 2005 August 30: Albireo: A Bright and Beautiful Double
- 2008 May 03: Alborz Mountain Milky Way
- 2007 February 03: Alborz Mountains in Moonlight
- 2014 July 19: Alicante Beach Moonrise
- 2001 June 26: All of Mars
- February 10 1998: All of Mars
- 2013 June 12: All of Mercury
- 2009 November 25: All Sky Milky Way Panorama
- 2013 October 02: All the Colors of the Sun
- 2010 June 27: All the Colors of the Sun
- 2007 June 24: All the Colors of the Sun
- 2012 May 24: All the Water on Europa
- 2012 May 15: All the Water on Planet Earth
- 2001 February 02: All-Sky Panorama
- 2014 July 24: ALMA Milky Way
- 2014 May 26: An ALMA Telescope Array Time Lapse
- 2009 March 28: Almahata Sitta 15
- 2013 December 12: Alnitak, Alnilam, Mintaka
- 2011 January 21: Alnitak, Alnilam, Mintaka
- 2006 December 29: Alnitak, Alnilam, Mintaka
- 2005 October 13: Alnitak, Alnilam, Mintaka
- 2014 July 03: Along the Cygnus Wall
- 2014 April 04: Along the Western Veil
- 2006 November 24: Alpha Cam: Runaway Star
- 2011 July 03: Alpha Centauri: The Closest Star System
- 2003 March 23: Alpha Centauri: The Closest Star System
- May 26 1996: Alpha Centauri: The Closest Star System
- 2009 January 02: Alpine Conjunction
- 2008 October 24: Amazing Comet Holmes
- 2005 July 27: America Returns to Space Flight
- 2007 April 01: Americans Defeat Russians in First Space Quidditch Match
- 2001 April 01: Americans Defeat Russians in First Space Quidditch Match
- 2010 December 31: Analemma 2010
- 2006 December 23: The Analemma and the Temple of Olympian Zeus
- 2005 July 13: Analemma of the Moon
- 2004 June 21: Analemma Over Ancient Nemea
- 2008 December 21: Analemma Over the Porch of Maidens
- 2007 June 17: Analemma over Ukraine
- 2002 July 09: Analemma
- July 12 1996: Ancient Cratered Plains on Ganymede
- 2008 May 13: Ancient Craters of Southern Rhea
- 2006 May 30: Ancient Craters on Saturns Rhea
- 2009 November 29: Ancient Layered Hills on Mars
- 2001 November 27: Ancient Layered Rocks on Mars
- 2012 October 02: An Ancient Stream Bank on Mars
- 2002 August 08: Ancient Volcanos of Mars
- 2010 July 15: Andes Sunset Eclipse
- 2003 May 19: The Andromeda Deep Field
- 2003 December 22: The Andromeda Galaxy from GALEX
- 2005 October 20: The Andromeda Galaxy in Infrared
- 2010 January 09: Andromeda Island Universe
- 2008 January 24: Andromeda Island Universe
- 2005 December 22: Andromeda Island Universe
- 2002 May 18: Andromeda Island Universe
- 2000 September 08: Andromeda Island Universe
- April 06 1996: Andromeda Nebula: Var!
- 2013 September 27: Andromeda on the Rocks
- 2004 December 27: Andromeda's Core
- 2009 February 09: Anemic Galaxy NGC 4921 at the Edge
- 2013 November 25: Anemic Spiral NGC 4921 from Hubble
- 2012 March 14: Angry Sun Erupting
- 2005 October 24: Angular Sand on Martian Hills
- 2006 March 28: Animation of Asteroids Passing Near Earth
- 2009 November 28: Annapurna Star Trails
- 2010 August 31: The Annotated Galactic Center
- 2001 December 29: The Annotated Galactic Centre
- September 11 1999: The Annotated Galactic Centre
- November 11 1997: The Annotated Galactic Centre
- 2001 November 11: An Annotated Leonid
- November 30 1998: An Annotated Leonid
- 2004 February 09: Announcing Comet C 2002 T7 LINEAR
- 2004 August 30: Announcing Comet C 2003 K4 LINEAR
- August 20 1995: Announcing Comet Hale-Bopp
- 2004 December 13: Announcing Comet Machholz
- August 24 1998: An Annular Eclipse of the Sun
- 2010 January 26: Annular Eclipse Over Myanmar
- 2009 January 25: Annular Eclipse: The Ring of Fire
- 2002 June 10: Annular Eclipse: The Ring of Fire
- 2005 October 05: An Annular Solar Eclipse at High Resolution
- 2012 May 19: Annular Solar Eclipse
- 2011 February 06: An Anomalous SETI Signal
- 2004 March 07: An Anomalous SETI Signal
- 2002 July 28: An Anomalous SETI Signal
- March 30 1999: An Anomalous SETI Signal
- 2001 May 21: Another Comet LINEAR Breaks Up
- 2011 June 05: Another Nearby Supernova in the Whirlpool Galaxy
- 2012 March 03: Another Tail for Comet Garradd
- 2009 February 15: Antarctic Ice Shelf Vista
- 2002 May 27: Antarctic Ice Shelf Vista
- 2000 September 11: Antarctic Ozone Hole Widens
- 2008 May 04: An Antarctic Total Solar Eclipse
- 2003 December 08: An Antarctic Total Solar Eclipse
- 2001 May 01: Antarctica Hears Little Normal Matter in the Big Bang
- 2012 April 17: Antares and Clouds
- 2004 May 09: Antares and Rho Ophiuchi
- 2000 May 21: Antares and Rho Ophiuchi
- September 22 1997: Antares and Rho Ophiuchi
- 2013 September 21: Antares Rocket Launch
- July 26 1998: Antares
- June 24 1997: Antares
- 2014 March 16: The Antennae Galaxies in Collision
- 2010 July 18: The Antennae Galaxies in Collision
- 2006 October 24: The Antennae Galaxies in Collision
- 2002 April 11: Antennae Galaxies in Near Infrared
- October 22 1997: The Antennae Galaxies
- 2011 April 29: The Antennae
- 2010 May 07: The Antennae
- 2006 June 30: The Antennae
- 2008 September 10: The Anthe Arc around Saturn
- 2010 November 28: Anticrepuscular Rays Over Colorado
- 2008 November 16: Anticrepuscular Rays Over Colorado
- 2001 October 30: Anticrepuscular Rays Over Colorado
- 2006 September 17: Anticrepuscular Rays Over Florida
- 2003 February 26: Anticrepuscular Rays Over Horseshoe Canyon
- 2012 February 21: Anticrepuscular Rays Over Wyoming
- 2013 January 20: The Antikythera Mechanism
- 2011 January 09: The Antikythera Mechanism
- 2006 December 05: The Antikythera Mechanism
- April 23 1997: Antila: A New Galactic Neighbor
- 2004 February 18: Anvil Cloud Over Sicily
- August 18 1998: APM 08279+5255: The Brightest Object Yet Known
- 2014 June 16: APOD Heatmap
- 2010 June 16: APOD is 15 Years Old Today
- 2000 June 16: APOD is Five Years Old Today
- June 16 1996: APOD is One Year Old Today
- 2001 June 16: APOD is Six Years Old Today
- 2005 June 16: APOD Is Ten Years Old Today
- June 16 1997: APOD is Two Years Old Today
- 2012 June 16: APOD Turns 17
- 2003 June 16: APOD Turns Eight
- 2013 June 16: APOD Turns Eighteen
- 2006 June 16: APOD Turns Eleven
- 2007 October 25: Apogee Moon, Perigee Moon
- 2004 October 21: Apogee Moon, Perigee Moon
- 2014 January 18: Apogee's Full Moon
- 2001 March 10: Apollo / Suveyor Stereo View
- 2014 December 20: Apollo 11 Landing Site Panorama
- 2012 August 30: Apollo 11 Landing Site Panorama
- 2003 September 20: Apollo 11: Catching Some Sun
- 2002 July 27: Apollo 11: Catching Some Sun
- 2007 July 20: Apollo 11: East Crater Panorama
- 2009 July 20: Apollo 11: Onto a New World
- May 19 1998: Apollo 11: Onto a New World
- 2009 May 23: Apollo 12 and Surveyor 3 Stereo View
- 2004 January 02: An Apollo 12 Panorama
- 2003 October 05: Apollo 12 Visits Surveyor 3
- 2001 March 03: Apollo 12 Visits Surveyor 3
- November 24 1996: Apollo 12 Visits Surveyor 3
- October 08 1995: Apollo 12 Visits Surveyor 3
- October 07 1995: Apollo 12's Lunar Module Descends
- 2006 January 21: Apollo 12: Self-Portrait
- 2003 March 15: Apollo 12: Self-Portrait
- 2000 November 04: Apollo 12: Self-Portrait
- May 09 1997: Apollo 12: Self-Portrait
- 2002 July 13: Apollo 12: Stereo View Near Surveyor Crater
- 2001 April 21: Apollo 12: Stereo View Near Surveyor Crater
- April 08 1999: Apollo 12: Surveyor 3 and Intrepid
- December 10 1995: Apollo 14 Deploys ALSEP
- December 09 1995: Apollo 14 on the Moon
- 2011 February 05: Apollo 14: A View from Antares
- April 27 1996: Apollo 14: Rickshaw Tracks Across the Moon
- 2008 November 30: An Apollo 15 Panorama: Astronaut Exploring
- 2004 January 13: An Apollo 15 Panorama
- July 05 1998: Apollo 15's Home on the Moon
- May 10 1997: Apollo 15's Home on the Moon
- February 22 1996: Apollo 15's Home on the Moon
- June 07 1997: Apollo 15: Driving on the Moon
- February 23 1996: Apollo 15: Driving on the Moon
- 2013 January 29: Apollo 16: Driving on the Moon
- 2000 March 19: Apollo 16: Exploring Plum Crater
- December 20 1997: Apollo 16: Exploring Plum Crater
- June 07 1996: Apollo 16: Exploring Plum Crater
- 2012 June 24: Apollo 17 at Shorty Crater
- 2003 November 09: Apollo 17 Lunarscape: A Magnificent Desolation
- 2000 December 09: Apollo 17 Lunarscape: A Magnificent Desolation
- April 20 1996: Apollo 17 Lunarscape: A Magnificent Desolation
- 2006 December 10: Apollo 17 Panorama: Astronaut Running
- 2004 April 12: Apollo 17 Panorama: Astronaut Running
- 2002 January 28: An Apollo 17 Panorama
- 2011 September 08: Apollo 17 Site: A Sharper View
- 2014 March 15: Apollo 17 VIP Site Anaglyph
- 2008 July 06: Apollo 17 VIP Site Anaglyph
- 2006 August 26: Apollo 17 VIP Site Anaglyph
- 2004 June 05: Apollo 17's Lunar Rover
- 2001 June 09: Apollo 17's Lunar Rover
- July 01 1999: Apollo 17's Lunar Rover
- 2006 January 07: Apollo 17's Moonship
- 2002 January 05: Apollo 17's Moonship
- 2001 January 06: Apollo 17's Moonship
- April 15 1999: Apollo 17's Moonship
- 2015 January 03: Apollo 17: A Stereo View from Lunar Orbit
- 2012 December 13: Apollo 17: A Stereo View from Lunar Orbit
- 2003 January 11: Apollo 17: Boulder in Stereo
- September 05 1997: Apollo 17: Boulder on the Moon
- 2005 December 17: Apollo 17: Last on the Moon
- 2002 December 12: Apollo 17: Last on the Moon
- 2007 December 14: Apollo 17: Shorty Crater Panorama
- June 20 1996: Apollo Sunrise
- 2013 September 22: Apollo's Analemma
- 2001 February 12: Approaching Asteroid Eros
- 2005 September 19: Approaching Asteroid Itokawa
- 2000 September 26: Approaching Jupiter
- 2001 April 30: Approaching the International Space Station
- 2000 September 18: Approaching the International Space Station
- 2004 April 01: April Fools Day More Intense On Mars
- 2005 April 14: April's Moon and the Pleiades
- 2003 July 27: The Aquarius Dwarf
- 2014 October 24: AR 2192: Giant on the Sun
- 2000 September 25: AR 9169: A Large Sunspot
- 2012 July 14: AR1520: Islands in the Photosphere
- 2000 July 20: AR9077: Solar Magnetic Arcade
- January 20 1998: Arachnoids on Venus
- November 29 1999: Arcs and Jets in Herbig Haro 34
- November 29 1998: Arecibo: The Largest Telescope
- April 12 1997: Arecibo: The Largest Telescope
- March 09 1996: Arecibo: The Largest Telescope
- 2009 November 02: Ares 1 X Rocket Lifts Off
- 2007 November 30: Aristarchus Plateau
- 2002 September 13: Aristarchus Plateau
- September 14 1996: Aristarchus' Unbelievable Discoveries
- November 08 1997: Aristarchus' Unbelievable Discoveries
- 2013 February 06: The Arms of M106
- 2007 April 11: The Arms of NGC 4258
- 2004 December 16: The Arms of NGC 7424
- 2001 June 14: Around The Arches Cluster
- 2009 April 03: Around the World in 80 Telescopes
- 2011 November 21: Around the World in 90 Minutes
- 2014 August 25: Arp 188 and the Tadpole's Tail
- 2012 November 08: Arp 188 and the Tadpole's Tail
- 2006 January 08: Arp 188 and the Tadpole's Tidal Tail
- 2004 May 15: Arp 188 and the Tadpole's Tidal Tail
- 2002 May 02: Arp 188 and the Tadpole's Tidal Tail
- 2010 September 26: Arp 188 and the Tadpoles Tidal Tail
- June 17 1997: Arp 220: Spirals in Collision
- August 31 1997: Arp 230: Two Spirals in One?
- August 22 1996: Arp 230: Two Spirals in One?
- 2011 September 22: Arp 272
- 2008 April 30: Arp 272
- 2008 November 15: Arp 273
- 2010 August 13: Arp 286: Trio in Virgo
- 2011 July 07: Arp 78: Peculiar Galaxy in Aries
- 2014 April 23: Arp 81: 100 Million Years Later
- 2003 December 11: Arp 81: 100 Million Years Later
- 2013 October 09: Arp 94
- 2009 November 12: Art and Science in NGC 918
- 2001 August 27: Artificial Night Sky Brightness
- 2011 December 03: As Above, So Below
- February 20 1996: ASCA X-Ray Observatory
- 2012 July 30: Ash and Lightning Above an Icelandic Volcano
- 2010 April 19: Ash and Lightning Above an Icelandic Volcano
- 2014 April 20: Ash and Lightning above an Icelandic Volcano
- July 28 1999: Asia at Night
- 2013 February 27: Asperatus Clouds Over New Zealand
- December 10 1998: Assembling The International Space Station
- 2002 September 19: Asteroid 1998 KY26
- 2001 December 24: Asteroid 1998 WT24 Passes Near Earth
- 2002 August 17: Asteroid 2002 NY40
- 2004 March 22: Asteroid 2004 FH Whizzes By
- 2011 November 09: Asteroid 2005 YU55 Passes the Earth
- 2008 January 30: Asteroid 2007 TU24 Passes the Earth
- 2013 February 17: Asteroid 2012 DA14 Passes the Earth
- July 01 1997: Asteroid 253 Mathilde's Large Craters
- June 18 1997: Asteroid 3753: Earth's Curious Companion
- August 05 1999: Asteroid 9969 Braille
- 2007 April 05: Asteroid and Galaxy
- 2002 November 13: Asteroid Annefrank
- 2009 June 07: Asteroid Eros Reconstructed
- 2001 June 05: Asteroid Eros Reconstructed
- 2002 October 27: Asteroid Gaspra's Best Face
- July 12 1998: Asteroid Gaspra's Best Face
- October 20 1995: Asteroid Gaspra's Best Face
- 2011 August 02: Asteroid Vesta Full Frame
- 2013 February 10: Asteroids in the Distance
- 2011 March 06: Asteroids in the Distance
- 2005 April 17: Asteroids in the Distance
- 2002 June 23: Asteroids in the Distance
- March 16 1998: Asteroids in the Distance
- 2011 October 01: Asteroids Near Earth
- March 13 1998: Asteroids
- 2005 December 03: Astro 1 In Orbit
- February 20 1999: Astro-1 In Orbit
- August 17 1997: Astro-1 In Orbit
- May 04 1996: Astro-1 In Orbit
- 2001 March 17: Astro-2 In Orbit
- 2004 May 30: Astronaut at Work
- 2000 May 31: Astronaut at Work
- 2010 February 24: Astronaut Installs Panoramic Space Window
- April 01 1998: Astronaut Kicks Lunar Field Goal
- 2012 December 09: The Astronaut Who Captured a Satellite
- 2010 January 11: The Astronaut Who Captured a Satellite
- 2009 April 01: Astronaut's Head Upgraded During Spacewalk
- 2007 August 24: Astronomer's Moon
- 2000 January 28: Astronomy From An F-18
- 2005 October 16: Astronomy Quilt of the Week
- 2003 October 17: Astronomy Quilt of the Week
- 2008 April 11: At first he couldn't see the Moon
- 2008 June 13: At Last GLAST
- 2008 December 11: At the Center of the Milky Way
- 2005 October 23: At the Center of the Milky Way
- 2002 October 18: At the Centre of the Milk Way
- January 17 1998: At The Core Of M15
- November 20 1995: At the Core of M15
- 2012 February 10: At the Core of NGC 6752
- 2014 April 03: At the Edge of NGC 2174
- 2012 May 26: At the Edge of NGC 891
- 2000 August 02: At the Edge of the Crescent Nebula
- 2002 May 12: At the Edge of the Helix Nebula
- July 20 1997: At the Edge of the Helix
- April 22 1996: At the Edge of the Helix
- 2003 July 07: At the Edge of the Sun
- 2007 July 03: At the Edge of Victoria Crater
- 2015 January 02: At the Heart of Orion
- 2012 October 06: At the Heart of Orion
- 2004 May 26: At the Summit of Olympus Mons
- August 20 1999: At The Sun's Edge
- 2008 August 07: At the Sun's Edge
- 2012 February 17: At the West Wall of Aristarchus Crater
- July 14 1998: At Work on Mars
- 2013 July 27: Atacama's Cloudy Night
- 2002 March 12: Atete Corona on Venus
- 2009 May 16: Atlantis and Hubble Side by Side
- April 02 1996: Atlantis Approaches Mir
- 2011 July 21: Atlantis Farewell from Parkes
- August 12 1995: Atlantis Landing
- 2011 July 13: Atlantis Last Approach
- 2010 May 08: Atlantis Lift Off
- 2008 February 09: Atlantis on Pad 39A
- 2010 May 28: Atlantis over Rhodes
- 2011 July 09: Atlantis Reflection
- 2010 January 17: Atlantis to Orbit
- 2006 September 13: Atlantis to Orbit
- 2004 December 12: Atlantis to Orbit
- 2003 January 05: Atlantis to Orbit
- 2001 July 23: Atlantis to Orbit
- 2009 June 22: Atlas 5 Rocket Launches to the Moon
- December 14 1995: An Atlas Centaur Rocket Launches
- 2013 February 01: Atlas V Launches TDRS K
- 2002 September 16: An Atlas V Rocket Prepares to Launch
- 2007 February 27: Atmospheres Detected on Two Extrasolar Planets
- 2010 November 16: Atoms for Peace Galaxy Collision
- 2007 March 13: Attacking Mars
- 2004 July 19: Attacking Mars
- 2008 August 21: August Moons
- 2004 July 22: Aura Launch
- 2012 February 24: Aurigae Nebulae
- 2007 September 05: Aurigids from 47,000 Feet
- November 11 1998: Aurora Above
- 2001 March 29: Aurora Alaskan Style
- 2012 October 05: Aurora and Fireball Over Norway
- 2014 October 03: Aurora and Milky Way in a Little Sky
- March 20 1999: Aurora and Orion
- January 26 1997: Aurora and Orion
- November 14 1995: Aurora and Orion
- 2013 November 18: Aurora and Unusual Clouds Over Iceland
- 2014 September 23: Aurora and Volcanic Light Pillar
- 2001 February 10: Aurora Astern
- November 30 1996: Aurora Astern
- October 26 1995: Aurora Astern
- May 05 1998: Aurora at Midnight
- 2000 May 19: An Aurora Before the Storm
- May 27 1996: Aurora Crown the Earth
- 2014 September 09: An Aurora Cupcake with a Milky Way Topping
- 2014 April 29: Aurora Dog over Alaska
- 2007 July 15: Aurora from Space
- 2005 November 05: Aurora from Space
- 2003 April 08: Aurora from Space
- 2003 October 30: Aurora in Colorado Skies
- 2000 April 10: Aurora in Red and Yellow
- 2007 November 19: Aurora in the Distance
- 2002 October 31: Aurora in the Night
- 2000 September 15: Aurora In West Texas Skies
- 2005 May 20: Aurora Iowa
- 2003 November 13: Aurora Oklahoma
- 2004 September 28: Aurora Over a Communications Tower
- 2010 October 06: Aurora Over Alaska
- 2007 April 09: Aurora Over Alaska
- March 04 1998: Aurora Over Alaska
- 2002 March 20: Aurora Over Antarctica
- 2003 July 02: Aurora Over Cape Cod
- January 01 1997: Aurora Over Circle, Alaska
- 2003 September 10: Aurora Over Clouds
- 2001 April 02: Aurora Over Clouds
- 2003 November 04: Aurora Over Edmonton
- 2011 August 23: Aurora Over Greenland
- 2012 March 21: Aurora Over Iceland
- 2006 December 18: Aurora Over Iowa
- 2014 September 17: Aurora over Maine
- 2001 April 06: Aurora Over New Zealand
- 2014 February 26: Aurora over New Zealand
- 2010 September 20: Aurora Over Norway
- 2012 April 30: Aurora Over Raufarh
- 2003 September 29: Aurora Over the Chugach Mountains
- 2012 October 17: Aurora Over White Dome Geyser
- 2001 November 05: Aurora Over Winnipeg
- 2004 November 17: Aurora Over Wisconsin
- 2009 September 22: Aurora Over Yellowknife
- 2008 August 09: Aurora Persei
- 2000 September 04: Aurora Persei
- 2014 December 07: Aurora Shimmer Meteor Flash
- 2009 December 19: Aurora Shimmer, Meteor Flash
- November 02 1999: Aurora Through a Moonlit Sky
- 2002 October 15: Aurora's Ring
- 2007 October 09: Aurora, Stars, Meteor, Lake, Alaska
- June 19 1996: Aurora: Curtains in the Sky
- 2012 October 11: Aurorae over Planet Earth
- 2009 February 01: Auroral Corona Over Norway
- 2014 October 14: Auroral Corona over Norway
- June 09 1997: An Auroral Ring on Jupiter
- 2003 January 31: Auroral Rocket Launch
- 2011 March 25: Auroral Substorm over Yellowknife
- 2001 November 14: Auroras Over Both Earth Poles
- 2014 July 14: Auroras over Northern Canada
- 2012 September 22: Austrian Analemma
- September 23 1998: Autumn and the Active Sun
- 2005 December 15: Autumn Moon Encore
- 2008 March 11: An Avalanche on Mars
- 2009 November 01: The Average Color of the Universe
- 2002 July 02: The Average Colour of the Universe
- 2004 October 09: The Averted Side Of The Moon
- 2000 October 21: The Averted Side Of The Moon
- October 07 1999: The Averted Side Of The Moon
2
posted on
01/11/2015 11:51:47 AM PST
by
SunkenCiv
(Imagine an imaginary menagerie manager imagining managing an imaginary menagerie.)
To: brytlea; cripplecreek; decimon; bigheadfred; KoRn; Grammy; steelyourfaith; Mmogamer; dayglored; ...
I hadn't thought about this artist in a long time -- his old website is still alive and well, since there was no larger image available, the link goes to his eponymous website instead.
3
posted on
01/11/2015 11:51:57 AM PST
by
SunkenCiv
(Imagine an imaginary menagerie manager imagining managing an imaginary menagerie.)
[foul language] I just noticed the links are no good, so I'll have to fix those and repost the first two installments. Mea culpa.
4
posted on
01/11/2015 11:56:39 AM PST
by
SunkenCiv
(Imagine an imaginary menagerie manager imagining managing an imaginary menagerie.)
To: SunkenCiv
Still able to generate some good ones with space engine.
5
posted on
01/11/2015 12:34:32 PM PST
by
cripplecreek
(You can't half ass conservatism.)
To: SunkenCiv
is it possible according the laws of physics to have two bodies the the size of the moons depicted in the painting that close together???
or would one of them be pulled into the other?
6
posted on
01/11/2015 12:40:33 PM PST
by
Chode
(Stand UP and Be Counted, or line up and be numbered - *DTOM* -w- NO Pity for the LAZY - 86-44)
To: Chode
is it possible according the laws of physics to have two bodies the the size of the moons depicted in the painting that close together??? Yes. Even suns can be quite close together.
7
posted on
01/11/2015 1:31:05 PM PST
by
fso301
To: fso301
damn, i forgot about that, i guess that settles it then... 8^)
8
posted on
01/11/2015 1:53:41 PM PST
by
Chode
(Stand UP and Be Counted, or line up and be numbered - *DTOM* -w- NO Pity for the LAZY - 86-44)
To: Chode
It all depends on mass and speed. The bigger the mass, the faster the speed and they won't crash into each other.
Multiple Star Systems
To: Chode
Also, one body could be X times larger, yet X times farther away yielding the same angular size, like the Sun & Moon at eclipse.
It is a neat artist’s rendition, but I think the lighting on the crescents is off
10
posted on
01/11/2015 3:41:50 PM PST
by
mikrofon
(APOD Bump)
To: Svartalfiar
the two body problem is interesting
11
posted on
01/11/2015 4:11:10 PM PST
by
Chode
(Stand UP and Be Counted, or line up and be numbered - *DTOM* -w- NO Pity for the LAZY - 86-44)
To: mikrofon
true, but my question still stands if all things are equal
as to the shadows, i don't know how that would work with only one light source
12
posted on
01/11/2015 4:17:41 PM PST
by
Chode
(Stand UP and Be Counted, or line up and be numbered - *DTOM* -w- NO Pity for the LAZY - 86-44)
To: Chode
...question still stands if all things are equal... It's called the Roche limit.
13
posted on
01/11/2015 4:35:27 PM PST
by
Nateman
(If liberals are not screaming you are doing it wrong!)
To: Nateman
thank you...
14
posted on
01/11/2015 4:38:49 PM PST
by
Chode
(Stand UP and Be Counted, or line up and be numbered - *DTOM* -w- NO Pity for the LAZY - 86-44)
To: Chode
The Roche limit applies to stars as well. During the cold war satellites designed to detect the gamma rays from nuclear explosions started to detect flashes of gamma ray light not from the Earth. They were so brief these Gamma Ray Busters were a real puzzle , even pin pointing where they happened was a real problem. Eventually satellites were made to hunt them down and some understanding of what is happening occurred. I mention this because one of the theories is that some of these busters are from neutron stars in tight orbit. The orbits get closer as energy radiates away in gravity waves. They eventually reach a Roche limit and
this is what happens.
15
posted on
01/11/2015 4:55:25 PM PST
by
Nateman
(If liberals are not screaming you are doing it wrong!)
To: Nateman
whoa
16
posted on
01/11/2015 5:06:45 PM PST
by
Chode
(Stand UP and Be Counted, or line up and be numbered - *DTOM* -w- NO Pity for the LAZY - 86-44)
To: cripplecreek
Pretty nice! Too wide here, but looks great!
17
posted on
01/11/2015 5:20:01 PM PST
by
SunkenCiv
(Imagine an imaginary menagerie manager imagining managing an imaginary menagerie.)
CORRECTED:
Astronomy Picture of the Day Archive - A -
- August 31 1998: A3827: Cluster Cannibal
- 2003 February 08: AB Aurigae: How To Make Planets
- June 11 1999: AB Aurigae: How To Make Planets
- 2003 January 09: Abell 1689 Warps Space
- 2000 December 08: Abell 1795: A Galaxy Cluster's Cooling Flow
- 2000 March 06: Abell 2142: Clash of the Galaxy Clusters
- 2010 June 20: Abell 2218: A Galaxy Cluster Lens
- 2008 February 10: Abell 2218: A Galaxy Cluster Lens
- 2001 October 07: Abell 2218: A Galaxy Cluster Lens
- 2000 February 01: Abell 2218: A Galaxy Cluster Lens
- January 11 1998: Abell 2218: A Galaxy Cluster Lens
- July 10 1995: Abell 2218: A Galaxy Cluster Lens
- 2002 January 16: Abell 2597's Cosmic Cavities
- 2011 June 29: Abell 2744: Pandora's Cluster of Galaxies
- February 18 1996: Abell 3627 in the Great Attractor
- 2009 September 21: Abell 370: Galaxy Cluster Gravitational Lens
- 2010 July 01: Above Aurora Australis
- 2009 May 20: Above Earth Fixing Hubble
- 2008 April 23: Above the Clouds
- 2004 September 15: Above the Eye of Hurricane Ivan
- December 19 1999: Accretion Disk Binary System
- December 26 1995: Accretion Disk Binary System
- 2005 March 12: Accretion Disk Simulation
- 2002 September 27: Accretion Disk Simulation
- 2011 November 29: Across the Center of Centaurus A
- 2008 March 28: Across the Universe
- 2013 November 16: Active Comet ISON
- 2008 January 10: Active Galaxy Centaurus A
- 2008 August 22: Active Galaxy NGC 1275
- 2008 September 24: Active Region 1002 on an Unusually Quiet Sun
- June 16 1998: An Active Region of the Sun
- 2000 June 08: Active Regions, CMEs, and X-Class Flares
- 2013 November 11: An Active Sun During a Total Eclipse
- 2007 April 02: An Active Sunspot Viewed Sideways
- 2004 January 21: Adirondack Rock on Mars
- 2013 January 07: AE Aurigae and the Flaming Star Nebula
- 2011 March 11: AE Aurigae and the Flaming Star Nebula
- 2009 January 26: AE Aurigae and the Flaming Star Nebula
- 2005 October 18: AE Aurigae: The Flaming Star
- 2001 December 04: AE Aurigae: The Flaming Star
- 2000 February 02: Aeolian Mars
- February 18 1999: Aerogel For Stardust
- 2001 August 29: AFGL 2591: A Massive Star Acts Up
- May 28 1998: Afterglow
- 2001 July 09: Air Pollution Earth
- 2012 September 05: Airglow Over Germany
- 2012 September 06: Airglow over Italy
- 2014 September 01: Airglow Ripples over Tibet
- 2013 April 20: Airglow, Gegenschein, and Milky Way
- 2008 April 29: Airplane Flight Patterns over the USA
- 2010 September 29: An Airplane in Front of the Moon
- 2001 January 29: An Airplane in Front of the Sun
- July 24 1998: Alan B. Shepard Jr. 1923-1998
- 2013 December 28: Alaska Aurora Sequence
- 2013 January 26: Alaskan Moondogs
- 2006 June 07: An Alaskan Volcano Erupts
- 2000 January 08: Albert Einstein Describes Space and Time
- September 27 1998: Albert Einstein Describes Space and Time
- 2005 April 22: Albert Einstein's Miraculous Year
- December 19 1995: Albert Einstein: 1879 - 1955
- 2005 August 30: Albireo: A Bright and Beautiful Double
- 2008 May 03: Alborz Mountain Milky Way
- 2007 February 03: Alborz Mountains in Moonlight
- 2014 July 19: Alicante Beach Moonrise
- 2001 June 26: All of Mars
- February 10 1998: All of Mars
- 2013 June 12: All of Mercury
- 2009 November 25: All Sky Milky Way Panorama
- 2013 October 02: All the Colors of the Sun
- 2010 June 27: All the Colors of the Sun
- 2007 June 24: All the Colors of the Sun
- 2012 May 24: All the Water on Europa
- 2012 May 15: All the Water on Planet Earth
- 2001 February 02: All-Sky Panorama
- 2014 July 24: ALMA Milky Way
- 2014 May 26: An ALMA Telescope Array Time Lapse
- 2009 March 28: Almahata Sitta 15
- 2013 December 12: Alnitak, Alnilam, Mintaka
- 2011 January 21: Alnitak, Alnilam, Mintaka
- 2006 December 29: Alnitak, Alnilam, Mintaka
- 2005 October 13: Alnitak, Alnilam, Mintaka
- 2014 July 03: Along the Cygnus Wall
- 2014 April 04: Along the Western Veil
- 2006 November 24: Alpha Cam: Runaway Star
- 2011 July 03: Alpha Centauri: The Closest Star System
- 2003 March 23: Alpha Centauri: The Closest Star System
- May 26 1996: Alpha Centauri: The Closest Star System
- 2009 January 02: Alpine Conjunction
- 2008 October 24: Amazing Comet Holmes
- 2005 July 27: America Returns to Space Flight
- 2007 April 01: Americans Defeat Russians in First Space Quidditch Match
- 2001 April 01: Americans Defeat Russians in First Space Quidditch Match
- 2010 December 31: Analemma 2010
- 2006 December 23: The Analemma and the Temple of Olympian Zeus
- 2005 July 13: Analemma of the Moon
- 2004 June 21: Analemma Over Ancient Nemea
- 2008 December 21: Analemma Over the Porch of Maidens
- 2007 June 17: Analemma over Ukraine
- 2002 July 09: Analemma
- July 12 1996: Ancient Cratered Plains on Ganymede
- 2008 May 13: Ancient Craters of Southern Rhea
- 2006 May 30: Ancient Craters on Saturns Rhea
- 2009 November 29: Ancient Layered Hills on Mars
- 2001 November 27: Ancient Layered Rocks on Mars
- 2012 October 02: An Ancient Stream Bank on Mars
- 2002 August 08: Ancient Volcanos of Mars
- 2010 July 15: Andes Sunset Eclipse
- 2003 May 19: The Andromeda Deep Field
- 2003 December 22: The Andromeda Galaxy from GALEX
- 2005 October 20: The Andromeda Galaxy in Infrared
- 2010 January 09: Andromeda Island Universe
- 2008 January 24: Andromeda Island Universe
- 2005 December 22: Andromeda Island Universe
- 2002 May 18: Andromeda Island Universe
- 2000 September 08: Andromeda Island Universe
- April 06 1996: Andromeda Nebula: Var!
- 2013 September 27: Andromeda on the Rocks
- 2004 December 27: Andromeda's Core
- 2009 February 09: Anemic Galaxy NGC 4921 at the Edge
- 2013 November 25: Anemic Spiral NGC 4921 from Hubble
- 2012 March 14: Angry Sun Erupting
- 2005 October 24: Angular Sand on Martian Hills
- 2006 March 28: Animation of Asteroids Passing Near Earth
- 2009 November 28: Annapurna Star Trails
- 2010 August 31: The Annotated Galactic Center
- 2001 December 29: The Annotated Galactic Centre
- September 11 1999: The Annotated Galactic Centre
- November 11 1997: The Annotated Galactic Centre
- 2001 November 11: An Annotated Leonid
- November 30 1998: An Annotated Leonid
- 2004 February 09: Announcing Comet C 2002 T7 LINEAR
- 2004 August 30: Announcing Comet C 2003 K4 LINEAR
- August 20 1995: Announcing Comet Hale-Bopp
- 2004 December 13: Announcing Comet Machholz
- August 24 1998: An Annular Eclipse of the Sun
- 2010 January 26: Annular Eclipse Over Myanmar
- 2009 January 25: Annular Eclipse: The Ring of Fire
- 2002 June 10: Annular Eclipse: The Ring of Fire
- 2005 October 05: An Annular Solar Eclipse at High Resolution
- 2012 May 19: Annular Solar Eclipse
- 2011 February 06: An Anomalous SETI Signal
- 2004 March 07: An Anomalous SETI Signal
- 2002 July 28: An Anomalous SETI Signal
- March 30 1999: An Anomalous SETI Signal
- 2001 May 21: Another Comet LINEAR Breaks Up
- 2011 June 05: Another Nearby Supernova in the Whirlpool Galaxy
- 2012 March 03: Another Tail for Comet Garradd
- 2009 February 15: Antarctic Ice Shelf Vista
- 2002 May 27: Antarctic Ice Shelf Vista
- 2000 September 11: Antarctic Ozone Hole Widens
- 2008 May 04: An Antarctic Total Solar Eclipse
- 2003 December 08: An Antarctic Total Solar Eclipse
- 2001 May 01: Antarctica Hears Little Normal Matter in the Big Bang
- 2012 April 17: Antares and Clouds
- 2004 May 09: Antares and Rho Ophiuchi
- 2000 May 21: Antares and Rho Ophiuchi
- September 22 1997: Antares and Rho Ophiuchi
- 2013 September 21: Antares Rocket Launch
- July 26 1998: Antares
- June 24 1997: Antares
- 2014 March 16: The Antennae Galaxies in Collision
- 2010 July 18: The Antennae Galaxies in Collision
- 2006 October 24: The Antennae Galaxies in Collision
- 2002 April 11: Antennae Galaxies in Near Infrared
- October 22 1997: The Antennae Galaxies
- 2011 April 29: The Antennae
- 2010 May 07: The Antennae
- 2006 June 30: The Antennae
- 2008 September 10: The Anthe Arc around Saturn
- 2010 November 28: Anticrepuscular Rays Over Colorado
- 2008 November 16: Anticrepuscular Rays Over Colorado
- 2001 October 30: Anticrepuscular Rays Over Colorado
- 2006 September 17: Anticrepuscular Rays Over Florida
- 2003 February 26: Anticrepuscular Rays Over Horseshoe Canyon
- 2012 February 21: Anticrepuscular Rays Over Wyoming
- 2013 January 20: The Antikythera Mechanism
- 2011 January 09: The Antikythera Mechanism
- 2006 December 05: The Antikythera Mechanism
- April 23 1997: Antila: A New Galactic Neighbor
- 2004 February 18: Anvil Cloud Over Sicily
- August 18 1998: APM 08279+5255: The Brightest Object Yet Known
- 2014 June 16: APOD Heatmap
- 2010 June 16: APOD is 15 Years Old Today
- 2000 June 16: APOD is Five Years Old Today
- June 16 1996: APOD is One Year Old Today
- 2001 June 16: APOD is Six Years Old Today
- 2005 June 16: APOD Is Ten Years Old Today
- June 16 1997: APOD is Two Years Old Today
- 2012 June 16: APOD Turns 17
- 2003 June 16: APOD Turns Eight
- 2013 June 16: APOD Turns Eighteen
- 2006 June 16: APOD Turns Eleven
- 2007 October 25: Apogee Moon, Perigee Moon
- 2004 October 21: Apogee Moon, Perigee Moon
- 2014 January 18: Apogee's Full Moon
- 2001 March 10: Apollo / Suveyor Stereo View
- 2014 December 20: Apollo 11 Landing Site Panorama
- 2012 August 30: Apollo 11 Landing Site Panorama
- 2003 September 20: Apollo 11: Catching Some Sun
- 2002 July 27: Apollo 11: Catching Some Sun
- 2007 July 20: Apollo 11: East Crater Panorama
- 2009 July 20: Apollo 11: Onto a New World
- May 19 1998: Apollo 11: Onto a New World
- 2009 May 23: Apollo 12 and Surveyor 3 Stereo View
- 2004 January 02: An Apollo 12 Panorama
- 2003 October 05: Apollo 12 Visits Surveyor 3
- 2001 March 03: Apollo 12 Visits Surveyor 3
- November 24 1996: Apollo 12 Visits Surveyor 3
- October 08 1995: Apollo 12 Visits Surveyor 3
- October 07 1995: Apollo 12's Lunar Module Descends
- 2006 January 21: Apollo 12: Self-Portrait
- 2003 March 15: Apollo 12: Self-Portrait
- 2000 November 04: Apollo 12: Self-Portrait
- May 09 1997: Apollo 12: Self-Portrait
- 2002 July 13: Apollo 12: Stereo View Near Surveyor Crater
- 2001 April 21: Apollo 12: Stereo View Near Surveyor Crater
- April 08 1999: Apollo 12: Surveyor 3 and Intrepid
- December 10 1995: Apollo 14 Deploys ALSEP
- December 09 1995: Apollo 14 on the Moon
- 2011 February 05: Apollo 14: A View from Antares
- April 27 1996: Apollo 14: Rickshaw Tracks Across the Moon
- 2008 November 30: An Apollo 15 Panorama: Astronaut Exploring
- 2004 January 13: An Apollo 15 Panorama
- July 05 1998: Apollo 15's Home on the Moon
- May 10 1997: Apollo 15's Home on the Moon
- February 22 1996: Apollo 15's Home on the Moon
- June 07 1997: Apollo 15: Driving on the Moon
- February 23 1996: Apollo 15: Driving on the Moon
- 2013 January 29: Apollo 16: Driving on the Moon
- 2000 March 19: Apollo 16: Exploring Plum Crater
- December 20 1997: Apollo 16: Exploring Plum Crater
- June 07 1996: Apollo 16: Exploring Plum Crater
- 2012 June 24: Apollo 17 at Shorty Crater
- 2003 November 09: Apollo 17 Lunarscape: A Magnificent Desolation
- 2000 December 09: Apollo 17 Lunarscape: A Magnificent Desolation
- April 20 1996: Apollo 17 Lunarscape: A Magnificent Desolation
- 2006 December 10: Apollo 17 Panorama: Astronaut Running
- 2004 April 12: Apollo 17 Panorama: Astronaut Running
- 2002 January 28: An Apollo 17 Panorama
- 2011 September 08: Apollo 17 Site: A Sharper View
- 2014 March 15: Apollo 17 VIP Site Anaglyph
- 2008 July 06: Apollo 17 VIP Site Anaglyph
- 2006 August 26: Apollo 17 VIP Site Anaglyph
- 2004 June 05: Apollo 17's Lunar Rover
- 2001 June 09: Apollo 17's Lunar Rover
- July 01 1999: Apollo 17's Lunar Rover
- 2006 January 07: Apollo 17's Moonship
- 2002 January 05: Apollo 17's Moonship
- 2001 January 06: Apollo 17's Moonship
- April 15 1999: Apollo 17's Moonship
- 2015 January 03: Apollo 17: A Stereo View from Lunar Orbit
- 2012 December 13: Apollo 17: A Stereo View from Lunar Orbit
- 2003 January 11: Apollo 17: Boulder in Stereo
- September 05 1997: Apollo 17: Boulder on the Moon
- 2005 December 17: Apollo 17: Last on the Moon
- 2002 December 12: Apollo 17: Last on the Moon
- 2007 December 14: Apollo 17: Shorty Crater Panorama
- June 20 1996: Apollo Sunrise
- 2013 September 22: Apollo's Analemma
- 2001 February 12: Approaching Asteroid Eros
- 2005 September 19: Approaching Asteroid Itokawa
- 2000 September 26: Approaching Jupiter
- 2001 April 30: Approaching the International Space Station
- 2000 September 18: Approaching the International Space Station
- 2004 April 01: April Fools Day More Intense On Mars
- 2005 April 14: April's Moon and the Pleiades
- 2003 July 27: The Aquarius Dwarf
- 2014 October 24: AR 2192: Giant on the Sun
- 2000 September 25: AR 9169: A Large Sunspot
- 2012 July 14: AR1520: Islands in the Photosphere
- 2000 July 20: AR9077: Solar Magnetic Arcade
- January 20 1998: Arachnoids on Venus
- November 29 1999: Arcs and Jets in Herbig Haro 34
- November 29 1998: Arecibo: The Largest Telescope
- April 12 1997: Arecibo: The Largest Telescope
- March 09 1996: Arecibo: The Largest Telescope
- 2009 November 02: Ares 1 X Rocket Lifts Off
- 2007 November 30: Aristarchus Plateau
- 2002 September 13: Aristarchus Plateau
- September 14 1996: Aristarchus' Unbelievable Discoveries
- November 08 1997: Aristarchus' Unbelievable Discoveries
- 2013 February 06: The Arms of M106
- 2007 April 11: The Arms of NGC 4258
- 2004 December 16: The Arms of NGC 7424
- 2001 June 14: Around The Arches Cluster
- 2009 April 03: Around the World in 80 Telescopes
- 2011 November 21: Around the World in 90 Minutes
- 2014 August 25: Arp 188 and the Tadpole's Tail
- 2012 November 08: Arp 188 and the Tadpole's Tail
- 2006 January 08: Arp 188 and the Tadpole's Tidal Tail
- 2004 May 15: Arp 188 and the Tadpole's Tidal Tail
- 2002 May 02: Arp 188 and the Tadpole's Tidal Tail
- 2010 September 26: Arp 188 and the Tadpoles Tidal Tail
- June 17 1997: Arp 220: Spirals in Collision
- August 31 1997: Arp 230: Two Spirals in One?
- August 22 1996: Arp 230: Two Spirals in One?
- 2011 September 22: Arp 272
- 2008 April 30: Arp 272
- 2008 November 15: Arp 273
- 2010 August 13: Arp 286: Trio in Virgo
- 2011 July 07: Arp 78: Peculiar Galaxy in Aries
- 2014 April 23: Arp 81: 100 Million Years Later
- 2003 December 11: Arp 81: 100 Million Years Later
- 2013 October 09: Arp 94
- 2009 November 12: Art and Science in NGC 918
- 2001 August 27: Artificial Night Sky Brightness
- 2011 December 03: As Above, So Below
- February 20 1996: ASCA X-Ray Observatory
- 2012 July 30: Ash and Lightning Above an Icelandic Volcano
- 2010 April 19: Ash and Lightning Above an Icelandic Volcano
- 2014 April 20: Ash and Lightning above an Icelandic Volcano
- July 28 1999: Asia at Night
- 2013 February 27: Asperatus Clouds Over New Zealand
- December 10 1998: Assembling The International Space Station
- 2002 September 19: Asteroid 1998 KY26
- 2001 December 24: Asteroid 1998 WT24 Passes Near Earth
- 2002 August 17: Asteroid 2002 NY40
- 2004 March 22: Asteroid 2004 FH Whizzes By
- 2011 November 09: Asteroid 2005 YU55 Passes the Earth
- 2008 January 30: Asteroid 2007 TU24 Passes the Earth
- 2013 February 17: Asteroid 2012 DA14 Passes the Earth
- July 01 1997: Asteroid 253 Mathilde's Large Craters
- June 18 1997: Asteroid 3753: Earth's Curious Companion
- August 05 1999: Asteroid 9969 Braille
- 2007 April 05: Asteroid and Galaxy
- 2002 November 13: Asteroid Annefrank
- 2009 June 07: Asteroid Eros Reconstructed
- 2001 June 05: Asteroid Eros Reconstructed
- 2002 October 27: Asteroid Gaspra's Best Face
- July 12 1998: Asteroid Gaspra's Best Face
- October 20 1995: Asteroid Gaspra's Best Face
- 2011 August 02: Asteroid Vesta Full Frame
- 2013 February 10: Asteroids in the Distance
- 2011 March 06: Asteroids in the Distance
- 2005 April 17: Asteroids in the Distance
- 2002 June 23: Asteroids in the Distance
- March 16 1998: Asteroids in the Distance
- 2011 October 01: Asteroids Near Earth
- March 13 1998: Asteroids
- 2005 December 03: Astro 1 In Orbit
- February 20 1999: Astro-1 In Orbit
- August 17 1997: Astro-1 In Orbit
- May 04 1996: Astro-1 In Orbit
- 2001 March 17: Astro-2 In Orbit
- 2004 May 30: Astronaut at Work
- 2000 May 31: Astronaut at Work
- 2010 February 24: Astronaut Installs Panoramic Space Window
- April 01 1998: Astronaut Kicks Lunar Field Goal
- 2012 December 09: The Astronaut Who Captured a Satellite
- 2010 January 11: The Astronaut Who Captured a Satellite
- 2009 April 01: Astronaut's Head Upgraded During Spacewalk
- 2007 August 24: Astronomer's Moon
- 2000 January 28: Astronomy From An F-18
- 2005 October 16: Astronomy Quilt of the Week
- 2003 October 17: Astronomy Quilt of the Week
- 2008 April 11: At first he couldn't see the Moon
- 2008 June 13: At Last GLAST
- 2008 December 11: At the Center of the Milky Way
- 2005 October 23: At the Center of the Milky Way
- 2002 October 18: At the Centre of the Milk Way
- January 17 1998: At The Core Of M15
- November 20 1995: At the Core of M15
- 2012 February 10: At the Core of NGC 6752
- 2014 April 03: At the Edge of NGC 2174
- 2012 May 26: At the Edge of NGC 891
- 2000 August 02: At the Edge of the Crescent Nebula
- 2002 May 12: At the Edge of the Helix Nebula
- July 20 1997: At the Edge of the Helix
- April 22 1996: At the Edge of the Helix
- 2003 July 07: At the Edge of the Sun
- 2007 July 03: At the Edge of Victoria Crater
- 2015 January 02: At the Heart of Orion
- 2012 October 06: At the Heart of Orion
- 2004 May 26: At the Summit of Olympus Mons
- August 20 1999: At The Sun's Edge
- 2008 August 07: At the Sun's Edge
- 2012 February 17: At the West Wall of Aristarchus Crater
- July 14 1998: At Work on Mars
- 2013 July 27: Atacama's Cloudy Night
- 2002 March 12: Atete Corona on Venus
- 2009 May 16: Atlantis and Hubble Side by Side
- April 02 1996: Atlantis Approaches Mir
- 2011 July 21: Atlantis Farewell from Parkes
- August 12 1995: Atlantis Landing
- 2011 July 13: Atlantis Last Approach
- 2010 May 08: Atlantis Lift Off
- 2008 February 09: Atlantis on Pad 39A
- 2010 May 28: Atlantis over Rhodes
- 2011 July 09: Atlantis Reflection
- 2010 January 17: Atlantis to Orbit
- 2006 September 13: Atlantis to Orbit
- 2004 December 12: Atlantis to Orbit
- 2003 January 05: Atlantis to Orbit
- 2001 July 23: Atlantis to Orbit
- 2009 June 22: Atlas 5 Rocket Launches to the Moon
- December 14 1995: An Atlas Centaur Rocket Launches
- 2013 February 01: Atlas V Launches TDRS K
- 2002 September 16: An Atlas V Rocket Prepares to Launch
- 2007 February 27: Atmospheres Detected on Two Extrasolar Planets
- 2010 November 16: Atoms for Peace Galaxy Collision
- 2007 March 13: Attacking Mars
- 2004 July 19: Attacking Mars
- 2008 August 21: August Moons
- 2004 July 22: Aura Launch
- 2012 February 24: Aurigae Nebulae
- 2007 September 05: Aurigids from 47,000 Feet
- November 11 1998: Aurora Above
- 2001 March 29: Aurora Alaskan Style
- 2012 October 05: Aurora and Fireball Over Norway
- 2014 October 03: Aurora and Milky Way in a Little Sky
- March 20 1999: Aurora and Orion
- January 26 1997: Aurora and Orion
- November 14 1995: Aurora and Orion
- 2013 November 18: Aurora and Unusual Clouds Over Iceland
- 2014 September 23: Aurora and Volcanic Light Pillar
- 2001 February 10: Aurora Astern
- November 30 1996: Aurora Astern
- October 26 1995: Aurora Astern
- May 05 1998: Aurora at Midnight
- 2000 May 19: An Aurora Before the Storm
- May 27 1996: Aurora Crown the Earth
- 2014 September 09: An Aurora Cupcake with a Milky Way Topping
- 2014 April 29: Aurora Dog over Alaska
- 2007 July 15: Aurora from Space
- 2005 November 05: Aurora from Space
- 2003 April 08: Aurora from Space
- 2003 October 30: Aurora in Colorado Skies
- 2000 April 10: Aurora in Red and Yellow
- 2007 November 19: Aurora in the Distance
- 2002 October 31: Aurora in the Night
- 2000 September 15: Aurora In West Texas Skies
- 2005 May 20: Aurora Iowa
- 2003 November 13: Aurora Oklahoma
- 2004 September 28: Aurora Over a Communications Tower
- 2010 October 06: Aurora Over Alaska
- 2007 April 09: Aurora Over Alaska
- March 04 1998: Aurora Over Alaska
- 2002 March 20: Aurora Over Antarctica
- 2003 July 02: Aurora Over Cape Cod
- January 01 1997: Aurora Over Circle, Alaska
- 2003 September 10: Aurora Over Clouds
- 2001 April 02: Aurora Over Clouds
- 2003 November 04: Aurora Over Edmonton
- 2011 August 23: Aurora Over Greenland
- 2012 March 21: Aurora Over Iceland
- 2006 December 18: Aurora Over Iowa
- 2014 September 17: Aurora over Maine
- 2001 April 06: Aurora Over New Zealand
- 2014 February 26: Aurora over New Zealand
- 2010 September 20: Aurora Over Norway
- 2012 April 30: Aurora Over Raufarh
- 2003 September 29: Aurora Over the Chugach Mountains
- 2012 October 17: Aurora Over White Dome Geyser
- 2001 November 05: Aurora Over Winnipeg
- 2004 November 17: Aurora Over Wisconsin
- 2009 September 22: Aurora Over Yellowknife
- 2008 August 09: Aurora Persei
- 2000 September 04: Aurora Persei
- 2014 December 07: Aurora Shimmer Meteor Flash
- 2009 December 19: Aurora Shimmer, Meteor Flash
- November 02 1999: Aurora Through a Moonlit Sky
- 2002 October 15: Aurora's Ring
- 2007 October 09: Aurora, Stars, Meteor, Lake, Alaska
- June 19 1996: Aurora: Curtains in the Sky
- 2012 October 11: Aurorae over Planet Earth
- 2009 February 01: Auroral Corona Over Norway
- 2014 October 14: Auroral Corona over Norway
- June 09 1997: An Auroral Ring on Jupiter
- 2003 January 31: Auroral Rocket Launch
- 2011 March 25: Auroral Substorm over Yellowknife
- 2001 November 14: Auroras Over Both Earth Poles
- 2014 July 14: Auroras over Northern Canada
- 2012 September 22: Austrian Analemma
- September 23 1998: Autumn and the Active Sun
- 2005 December 15: Autumn Moon Encore
- 2008 March 11: An Avalanche on Mars
- 2009 November 01: The Average Color of the Universe
- 2002 July 02: The Average Colour of the Universe
- 2004 October 09: The Averted Side Of The Moon
- 2000 October 21: The Averted Side Of The Moon
- October 07 1999: The Averted Side Of The Moon
18
posted on
01/11/2015 5:25:45 PM PST
by
SunkenCiv
(Imagine an imaginary menagerie manager imagining managing an imaginary menagerie.)
To: Chode
They wouldn’t have facing crescents, for one thing. They could be on the same side, with one much further out but larger, and the planet would be in orbit around it, with the smaller, nearer body in orbit around the planet.
19
posted on
01/11/2015 6:04:07 PM PST
by
SunkenCiv
(Imagine an imaginary menagerie manager imagining managing an imaginary menagerie.)
To: SunkenCiv
i'd think it would require two light sources no matter what
20
posted on
01/11/2015 6:41:32 PM PST
by
Chode
(Stand UP and Be Counted, or line up and be numbered - *DTOM* -w- NO Pity for the LAZY - 86-44)
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