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Astronomy (General/Chat)

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  • Northern Lights May Glow Over Northeast, Midwest This Week

    11/02/2015 5:38:40 PM PST · by PghBaldy · 3 replies
    Accuweather ^ | November 2 | Brian Lada
    Stargazers may be in for a rare cosmic light show this week as the northern lights dance across the night sky. Monday night and Tuesday night will both bring the chance for people in Canada and the northern United States to see the northern lights as an influx of charges particles from the sun interacts with the earth's atmosphere. People from New Hampshire to Nebraska will have the best conditions for viewing the aurora, with mainly clear skies expected on both nights.
  • New 'Star Trek' TV Series a Go at CBS All Access

    11/02/2015 9:48:55 AM PST · by Red Badger · 105 replies
    www.hollywoodreporter.com ^ | November 02, 2015 7:30am PT | by Lesley Goldberg
    Just in time for its 50th anniversary, Star Trek is returning to the small screen. Prolific producer Alex Kurtzman is developing a new take on the beloved sci-fi classic for TV, The Hollywood Reporter has learned. The new Star Trek has been picked up straight to series at CBS, with the premiere slated for the network in January 2017. Subsequent episodes will air on its digital and VOD platform, CBS All Access. The premiere and all subsequent episodes will then be available in the U.S. on CBS All Access, the network’s digital subscription video on demand and live streaming service....
  • Want to fly at 2,500mph? BAE Systems does and is willing to pay £20m for it

    11/02/2015 9:37:22 AM PST · by Red Badger · 10 replies
    www.telegraph.co.uk ^ | 12:01AM GMT 02 Nov 2015 | By Alan Tovey, Industry Editor
    Defence giant BAE Systems to buy a stake in Britain's Reaction Engines, which is developing revolutionary SABRE engines for ultra-fast aircraft How an aircraft fitted with the SABRE engines might look ------------------------------------------------------------------------------------------------------------------------------------------- Hypersonic air travel and cut-price satellite launches will move a step closer when BAE Systems buys a stake in a UK company developing engines able to power aircraft at 2,500mph and into space. The FTSE 100 group is set to purchase 20pc of Oxfordshire-based Reaction Engines for £20.6m, in a deal that will see the defence giant’s expertise applied to research on the privately-held company’s engine, which combines...
  • Astronomy Picture of the Day -- Comet ISON Being Destroyed by the Sun

    11/01/2015 10:24:46 PM PST · by SunkenCiv · 6 replies
    NASA ^ | November 02, 2015 | (see photo credit)
    Explanation: Most comets don't survive a close encounter with the Sun. Two years ago this month, though, Comet ISON was thought by some to be big enough to withstand its perilous sungrazing dive. The featured video shows the drama as it was recorded by NASA's Solar and Heliospheric Observatory (SOHO) satellite. As many Earthlings watched in fascination, a bright area did emerge from closest approach, but it soon faded and dispersed. It is now assumed that no large fragments of Comet C/2012 S1 (ISON) survived. Besides the comet, the active Sun is seen to eject puffs of plasma known as...
  • Astronomy Picture of the Day -- The Milky Way Over Monument Valley

    10/31/2015 9:14:38 PM PDT · by SunkenCiv · 20 replies
    NASA ^ | November 01, 2015 | (see photo credit)
    Explanation: You don't have to be at Monument Valley to see the Milky Way arch across the sky like this -- but it helps. Only at Monument Valley USA would you see a picturesque foreground that includes these iconic rock peaks called buttes. Buttes are composed of hard rock left behind after water has eroded away the surrounding soft rock. In the featured image taken in 2012, the closest butte on the left and the butte to its right are known as the Mittens, while Merrick Butte can be seen just further to the right. High overhead stretches a band...
  • Astronomy Picture of the Day -- Ghosts and Star Trails

    10/31/2015 1:15:25 PM PDT · by SunkenCiv · 2 replies
    NASA ^ | October 31, 2015 | (see photo credit)
    Explanation: Don't be scared. Stars won't fall from the sky and ghosts won't really haunt your neighborhood tonight. But it looks like they might be doing just that in this eerie picture of an eccentric old abandoned house in moonlight. A treat for the eye the image is a trick of stacked multiple exposures, 60 frames exposed for 25 seconds each. While the digital frames were recorded with a camera fixed to a tripod stars traced concentric arcs about the north celestial pole, only a reflection of planet Earth's rotation on its axis. Conveniently marked by bright star Polaris, the...
  • Astronomy Picture of the Day -- The Witch Head Nebula

    10/31/2015 1:13:06 PM PDT · by SunkenCiv · 16 replies
    NASA ^ | October 30, 2015 | (see photo credit)
    Explanation: Double, double toil and trouble; Fire burn, and cauldron bubble .... maybe Macbeth should have consulted the Witch Head Nebula. A frighteningly shaped reflection nebula, this cosmic crone is about 800 light-years away though. Its malevolent visage seems to glare toward nearby bright star Rigel in Orion, just off the right edge of this frame. More formally known as IC 2118, the interstellar cloud of dust and gas is nearly 70 light-years across, its dust grains reflecting Rigel's starlight. In this composite portrait, the nebula's color is caused not only by the star's intense bluish light but because the...
  • If the Moon were replaced with some of our planets (at night) 4k

    10/30/2015 5:58:22 AM PDT · by WhiskeyX · 5 replies
    YouTube ^ | May 2, 2013 | yeti dynamics
    This is a visualization of what it might be like if the Moon was replaced with some of the other planets at the same distance as our moon. Planets Rendered in 4K resolution! On Change Quality click on "original" to view in 4k. You need a 4k Monitor to watch. otherwise just watch in 1080p or lower
  • Astronomy Picture of the Day -- IC 1871: Inside the Soul Nebula

    10/29/2015 2:31:38 PM PDT · by SunkenCiv · 12 replies
    NASA ^ | October 29, 2015 | (see photo credit)
    Explanation: This cosmic close-up looks deep inside the Soul Nebula. The dark and brooding dust clouds outlined by bright ridges of glowing gas are cataloged as IC 1871. About 25 light-years across, the telescopic field of view spans only a small part of the much larger Heart and Soul nebulae. At an estimated distance of 6,500 light-years the star-forming complex lies within the Perseus spiral arm of the Milky Way, seen in planet Earth's skies toward the constellation Cassiopeia. An example of triggered star formation, the dense star-forming clouds of IC 1871 are themselves sculpted by the intense winds and...
  • If the Moon were replaced with some of our planets

    10/29/2015 10:21:16 AM PDT · by WhiskeyX · 34 replies
    YouTube ^ | Jan 10, 2013 | yeti dynamics
    This is a visualization of what it might be like if the Moon was replaced with some of the other planets at the same distance as our moon
  • Astronomy Picture of the Day -- Massive Black Hole Shreds Passing Star

    10/28/2015 5:14:52 PM PDT · by SunkenCiv · 16 replies
    NASA ^ | October 28, 2015 | (see photo credit)
    Explanation: What happens when a star gets too close to a black hole? Recent observations from Earth-orbiting observatories of an event dubbed ASASSN-14li, in a distant galactic center, appears to be giving one star's harrowing story. Although angularly unresolved, variations in high energy light indicate that some of the star became shredded and reformed into a disk swirling around the dark abyss. In the hypothesized scenario envisioned, a jet formed on the spin axis of the black hole. The innermost part of the disk, colored white, glows most strongly in X-rays and may drive a periodic wind, shown in blue....
  • Rosetta finds molecular oxygen on comet 67P

    10/28/2015 12:35:33 PM PDT · by Red Badger · 11 replies
    Phys.org ^ | October 28, 2015 | Staff
    This single frame Rosetta navigation camera image of Comet 67P/Churyumov-Gerasimenko was taken on 7 July 2015 from a distance of 154 km from the comet centre. The image has a resolution of 13.1 m/pixel and measures 13.4 km across. Credit: ESA/Rosetta/NAVCAM --------------------------------------------------------------------------------------------------------------------------------------------- Stunned scientists announced Wednesday the unexpected discovery of large quantities of oxygen on a comet which streaked past the Sun in August with a European spacecraft in tow. The find came as a "big surprise", and challenges mainstream theories on the formation of our Solar System, said scientist Andre Bieler of the University of Michigan. Measurements suggested that...
  • China Just Flew This Gigantic Airship To the Edge Of Space

    10/28/2015 4:03:10 AM PDT · by mabarker1 · 49 replies
    Fastcoexist.com ^ | October 20, 2015 | Charlie Sorrel
    China Just Flew This Gigantic Airship To the Edge Of Space The technology could have communications and military advantages for China. China just flew a 250-foot airship to near the top of the Earth's atmosphere. The solar-powered behemoth can stay airborne for half a year and requires no fuel to get it more than 12 miles into the air—just fill it with helium and let it go; the sun powers it once it reaches its cruising altitude. Airships predate airplanes, but have been largely supplanted by them. However, they remain superior for pretty much anything that doesn’t require the speed...
  • Why Earth is so much bigger than Mars: Rocky planets formed from 'pebbles'

    10/27/2015 11:47:58 AM PDT · by JimSEA · 9 replies
    Science Daily ^ | 10/27/2015 | Southwest Research Institute
    Using a new process in planetary formation modeling, where planets grow from tiny bodies called "pebbles," Southwest Research Institute scientists can explain why Mars is so much smaller than Earth. This same process also explains the rapid formation of the gas giants Jupiter and Saturn, as reported earlier this year. "This numerical simulation actually reproduces the structure of the inner solar system, with Earth, Venus, and a smaller Mars," said Hal Levison, an Institute scientist at the SwRI Planetary Science Directorate. He is the first author of a new paper published in the Proceedings of the National Academy of Sciences...
  • Astronomy Picture of the Day -- Bright from the Heart Nebula

    10/27/2015 3:46:27 AM PDT · by SunkenCiv · 7 replies
    NASA ^ | October 27, 2015 | (see photo credit)
    Explanation: What's that inside the Heart Nebula? First, the large emission nebula dubbed IC 1805 looks, in whole, like a human heart. The nebula glows brightly in red light emitted by its most prominent element: hydrogen. The red glow and the larger shape are all created by a small group of stars near the nebula's center. In the center of the Heart Nebula are young stars from the open star cluster Melotte 15 that are eroding away several picturesque dust pillars with their energetic light and winds. The open cluster of stars contains a few bright stars nearly 50 times...
  • Astronomy Picture of the Day -- Charon and the Small Moons of Pluto

    10/27/2015 3:43:51 AM PDT · by SunkenCiv · 7 replies
    NASA ^ | October 26, 2015 | (see photo credit)
    Explanation: What do the moons of Pluto look like? Before a decade ago, only the largest moon Charon was known, but never imaged. As the robotic New Horizons spacecraft was prepared and launched, other moons were identified on Hubble images but remained only specks of light. Finally, this past summer, New Horizons swept right past Pluto, photographed Pluto and Charon in detail, and took the best images of Styx, Nix, Kerberos, and Hydra that it could. The featured image composite shows the results -- each moon is seen to have a distinct shape, while underlying complexity is only hinted. Even...
  • Boozy comet leaves '500 bottles of wine per second' trail in its wake

    10/26/2015 7:26:54 PM PDT · by Fred Nerks · 40 replies
    ninemsn ^ | 27/10/2015 | N/A
    A comet with the nickname Happy Hour leaves a boozy trail equivalent to "500 bottles of wine per second" in its wake as it shoots through space. Scientists studying the comet, known as Lovejoy, have found its glowing trail is made up of alcohol and sugar. A study published by a group of scientists from NASA and European agencies observed the unusual comet as it rocketed alongside the sun on January 30, NASA reports. "You have alcohol and sugar, so that can lead to a 'happy hour' name, but I would not recommend anyone drink this water," team researcher Darek...
  • Astronomy Picture of the Day -- Jupiter and Venus from Earth

    10/26/2015 8:12:40 AM PDT · by SunkenCiv · 14 replies
    NASA ^ | October 25, 2015 | (see photo credit)
    Explanation: It was visible around the world. The sunset conjunction of Jupiter and Venus in 2012 was visible almost no matter where you lived on Earth. Anyone on the planet with a clear western horizon at sunset could see them. Pictured above in 2012, a creative photographer traveled away from the town lights of Szubin, Poland to image a near closest approach of the two planets. The bright planets were separated only by three degrees and his daughter striking a humorous pose. A faint red sunset still glowed in the background. Jupiter and Venus will be at it again this...
  • New Horizons aiming toward next target [Kuiper Belt 2014 MU69]

    10/25/2015 6:30:08 PM PDT · by markomalley · 4 replies
    Earthsky ^ | 10/25/15
    The fast-moving New Horizons spacecraft is now approximately 74 million miles (119 million km) beyond the Pluto system, which it swept through in July. Today (October 25, 2015), the spacecraft is carrying out the second in a series of four initial targeting maneuvers ultimately designed to send it toward its next target – a small body in the Kuiper Belt about a billion miles beyond Pluto – called 2014 MU69. NASA said: The four planned maneuvers will change New Horizons’ trajectory by approximately 57 meters per second, nudging it toward a prospective close encounter with MU69 on January 1, 2019....
  • Cassini Spies Bright Venus From Saturn Orbit

    10/24/2015 5:59:52 PM PDT · by lbryce · 3 replies
    NASA-Google Plus ^ | March 1, 2013 | NASA
    Seeing Earth first from Mars and then from Saturn was indeed mind-boggling but the recent long distance image from Saturn of Venus really amazed me, especially since it occured over two years ago. Peering over the shoulder of giant Saturn, through its rings, and across interplanetary space, NASA's Cassini spacecraft spies the bright, cloudy terrestrial planet, Venus. The vast distance from Saturn means that Venus only shows up as a white dot, just above and to the right of the image center. Venus, along with Mercury, Earth, and Mars, is one of the rocky 'terrestrial' planets in the solar...