Keyword: xplanets

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  • Young Jupiter wiped out solar system's early inner planets, study says

    03/23/2015 5:01:44 PM PDT · by BenLurkin · 17 replies
    The more planetary systems astronomers discovered, the more our own solar system looked like an oddball. Exoplanets – at least the ones big enough for us to see – tended to be bigger than Earth, with tight orbits that took them much closer to their host stars. In multi-planet systems, these orbits tended to be much closer together than they are in our solar system. For instance, the star known as Kepler-11 has six planets closer to it than Venus is to the sun. Why does our solar system look so different? Astrophysicists Konstantin Batygin of Caltech and Greg Laughlin...
  • In Milky Way, 100 Billion Planets May Exist in Habitable Zone

    03/23/2015 12:44:17 AM PDT · by 2ndDivisionVet · 57 replies
    Weather.com ^ | March 18, 2015 | Michele Berger
    Life on Earth exists becuase of the sun and our distance from it. Without that star and the energy it gives off, we’d be what NASA once described as a “lifeless ball of ice-coated rock.” Luckily, we are far enough from it, and as of right now, it’s not radiating so much light as to make our planet uninhabitable. In some ways, we’re in the sweet spot, and researchers may have discovered many more such connections. Stars in the Milky Way may have 100 billion planets — two, on average, per star — in their habitable zone, the area far...
  • Is This Picture a 'Seed' Sent to Earth by Aliens? Scientists Discover Mysterious Organism

    03/01/2015 1:26:58 PM PST · by lbryce · 107 replies
    SundayExpress ^ | January 25, 2015 | Nathan Rao
    Some scientists believe this is a seed sent to earth by aliens The never-before seen image shows a microscopic metal globe spewing out biological material feared to be an infectious agent. Though the origin or purpose of the mysterious sphere is uncertain, experts say it could contain genetic material - the precursor to life. They sensationally claim it could have been designed by an intelligent species to “seed” and propagate alien life on Earth. It is the first time anything like this has been seen and points not only to the existence of extra-terrestrial life, but to complex and...
  • Earth's other 'moon' and its crazy orbit could reveal mysteries of the solar system

    02/26/2015 6:29:41 AM PST · by Red Badger · 47 replies
    Phys.Org ^ | 02-25-2015 | by Duncan Forgan
    We all know and love the moon. We're so assured that we only have one that we don't even give it a specific name. It is the brightest object in the night sky, and amateur astronomers take great delight in mapping its craters and seas. To date, it is the only other heavenly body with human footprints. What you might not know is that the moon is not the Earth's only natural satellite. As recently as 1997, we discovered that another body, 3753 Cruithne, is what's called a quasi-orbital satellite of Earth. This simply means that Cruithne doesn't loop around...
  • Could there be another planet behind the sun?

    02/24/2015 11:08:07 AM PST · by Red Badger · 71 replies
    Phys.Org ^ | 02-24-2015 | by Fraser Cain, Universe Today
    If you've read your share of sci-fi, and I know you have, you've read stories about another Earth-sized planet orbiting on the other side of the Solar System, blocked by the Sun. Could it really be there? =========================================================== Color illustration showing the scale of planets in our solar system, focusing on Jupiter and Saturn. Credit: NASA =========================================================== No. Nooooo. No. Just no. This is a delightful staple in science fiction. There's a mysterious world that orbits the Sun exactly the same distance as Earth, but it's directly across the Solar System from us; always hidden by the Sun. Little do...
  • A close call of 0.8 light years [Nibiru?]

    02/22/2015 7:43:37 AM PST · by Red Badger · 38 replies
    Phys.Org ^ | Provided by University of Rochester
    A group of astronomers from the US, Europe, Chile and South Africa have determined that 70,000 years ago a recently discovered dim star is likely to have passed through the solar system's distant cloud of comets, the Oort Cloud. No other star is known to have ever approached our solar system this close - five times closer than the current closest star, Proxima Centauri. In a paper published in Astrophysical Journal Letters, lead author Eric Mamajek from the University of Rochester and his collaborators analyzed the velocity and trajectory of a low-mass star system nicknamed "Scholz's star." The star's trajectory...
  • Laser 'ruler' holds promise for hunting exoplanets

    02/18/2015 6:20:37 AM PST · by Red Badger · 5 replies
    Phys.Org ^ | 02-17-2015 | Provided by Institute of Physics
    The hunt for Earth-like planets around distant stars could soon become a lot easier thanks to a technique developed by researchers in Germany. In a paper published today, 18 February, in the New Journal of Physics, the team of researchers have successfully demonstrated how a solar telescope can be combined with a piece of technology that has already taken the physics world by storm—the laser frequency comb (LFC). It is expected the technique will allow a spectral analysis of distant stars with unprecedented accuracy, as well as advance research in other areas of astrophysics, such as detailed observations of the...
  • Star Blasted Through Solar System 70,000 Years Ago

    02/18/2015 1:11:46 PM PST · by BenLurkin · 113 replies
    discovery.com ^ | Ian O'Neill
    Highlighted by astronomers at the University of Rochester and the European Southern Observatory, the star — nicknamed “Scholz’s star” — has a very low tangential velocity in the sky, but it has been clocked traveling at a breakneck speed away from us. In other words, from our perspective, Scholz’s star is fleeing the scene of a collision with us. “Most stars this nearby show much larger tangential motion,” said Eric Mamajek, of the University of Rochester. “The small tangential motion and proximity initially indicated that the star was most likely either moving towards a future close encounter with the solar...
  • Refuting The Laws of Physics, Part 2 of 2

    02/09/2015 6:23:56 AM PST · by Kaslin · 44 replies
    Townhall.com ^ | February 9, 2015 | Mark Baisley
    Last month, I was invited to deliver the keynote address to a gathering of local Republican leaders at one of those pricey fundraising dinners. I knew that for thirty minutes, I would have the uninterrupted attention of an impressive gathering of involved conservatives and elected officials, including two United States Congressmen seated right up front. I did not want to spend that rare circumstance on temporal matters like encouraging a “Yes” vote to approve the Keystone Pipeline. Plus, I felt an obligation to deliver a speech that would seem worthy of $150 per plate. So after investing much thought, I...
  • The Moment We’ve been Waiting For: First New Images of Pluto from New Horizons

    02/05/2015 7:23:34 AM PST · by kidd · 28 replies
    Universe Today ^ | February 4, 2015 | Nancy Atkinson
    Here we go! New Horizons is now on approach and today – on the anniversary of Pluto discoverer Clyde Tombaugh’s birth – the spacecraft has sent back its first new images of the Pluto system. The images aren’t Earth-shattering (Pluto-shattering?) but they do represent the mission is closing in on its target, and will allow the New Horizons engineers to precisely aim the spacecraft as it continues its approach. The photos were taken with the telescopic Long-Range Reconnaissance Imager (LORRI) on January 25 and 27, 2015. “Pluto is finally becoming more than just a pinpoint of light,” said Hal Weaver,...
  • Curiosity spitting odd findings after Mars dust feast

    02/07/2015 7:18:53 PM PST · by BenLurkin · 12 replies
    slashgear.com ^ | Chris Davies
    NASA's Curiosity rover has been busy with its drill again, and analysis of the second sample of Martian rock is already turning up some unexpected conditions back when the red planet supported liquid water. Curiosity put its low-percussion-level drill into play for the first time last week, carving a chunk out of a site known as "Mojave 2" at the base of Mount Sharp, and feeding it in powder form into its Chemistry and Mineralogy (CheMin) instrument. Turns out, even though the analysis isn't finished yet, there are already signs of a surprising amount of jarosite, to a degree that...
  • Riding light -- the enormity of space makes even light seem slow (45 min video)

    02/01/2015 11:37:26 PM PST · by LibWhacker · 35 replies
    Vimeo ^ | 1/25/15 | Alphonse Swinehart
    ==> Click here <== to watch video. Riding Light from Alphonse Swinehart Plus 6 days ago All Audiences In our terrestrial view of things, the speed of light seems incredibly fast. But as soon as you view it against the vast distances of the universe, it's unfortunately very slow. This animation illustrates, in realtime, the journey of a photon of light emitted from the sun and traveling across a portion of the solar system. I've taken liberties with certain things like the alignment of planets and asteroids, but overall I've kept the size and distances of all the objects as...
  • Refuting The Laws of Physics, Part 1 of 2

    02/01/2015 12:04:38 PM PST · by Kaslin · 19 replies
    Townhall.com ^ | February 1, 2015 | Mark Baisley
    I count myself among the many astrogeeks who (1) keep track of where all the visible planets are and who (2) hold a considered opinion regarding whether Pluto should have been downgraded from full planet status. (BTW, yes, Pluto deserves the demotion to dwarf planet; not just because it is even smaller than the dwarf planet Eris, but also because Pluto can’t walk upright like Goofy). This month provides particularly interesting evenings for stargazers. Five planets — Mars, Neptune, Venus, Uranus, and Mercury — are all bunched up within a few degrees of each other from the perspective of Earth....
  • Astronomical discovery: 'Super Saturn' with rings 200 times as large

    01/28/2015 2:55:55 PM PST · by Drew68 · 28 replies
    CNN ^ | 28 Jan 15 | Ben Brumfield
    (CNN)In 1610, after he built his telescope, Galileo Galilei first spotted enormous Saturn's gigantic rings. More than 400 years later, astronomers have in a sense dwarfed that discovery with a similar first. Using powerful optics, they have found a much larger planet-like body, J1407b, with rings 200 times the size of Saturn's, U.S. and Dutch astronomers said. It lies some 400 light-years away from Earth. For decades, scientists have believed that many moons around large planets formed out of such ring systems. But this is the first one astronomers have observed aside from Saturn's, they said. It was discovered in...
  • Strange Comet Discoveries Revealed by Rosetta Spacecraft

    01/23/2015 7:39:21 AM PST · by BenLurkin · 54 replies
    Space.com ^ | January 22, 2015 02:03pm ET | Miriam Kramer,
    Researchers working with Rosetta have found that the comet harbors organic compounds, carbon-based molecules that are sometimes known as the chemical building blocks of life. This marks the first time organic molecules have been detected on the surface of a comet's nucleus, according to Fabrizio Capaccioni, the principal investigator of the VIRTIS instrument on Rosetta. The northern hemisphere of the comet's nucleus is also filled with dunes and ripples that look somewhat like geological markings on Earth, Mars and Venus. Comet 67P/C-G doesn't have a robust atmosphere and high gravity like those planets, and yet it still has structures resembling...
  • Three nearly Earth-size planets found orbiting nearby star

    01/20/2015 12:05:17 PM PST · by Red Badger · 23 replies
    Phys.Org ^ | Jan 16, 2015 | Provided by University of Arizona
    NASA's Kepler Space Telescope, despite being hobbled by the loss of critical guidance systems, has discovered a star with three planets only slightly larger than Earth. The outermost planet orbits in the "Goldilocks" zone, a region where surface temperatures could be moderate enough for liquid water and perhaps life, to exist. The star, EPIC 201367065, is a cool red M-dwarf about half the size and mass of our own sun. At a distance of 150 light years, the star ranks among the top 10 nearest stars known to have transiting planets. The star's proximity means it's bright enough for astronomers...
  • Two more planets in our Solar System, say astronomers

    01/20/2015 8:54:04 AM PST · by Red Badger · 51 replies
    www.businessinsider.com ^ | Jan. 19, 2015, 8:40 AM | Richard INGHAM, AFP
    Paris (AFP) - The Solar System has at least two more planets waiting to be discovered beyond the orbit of Pluto, Spanish and British astronomers say. The official list of planets in our star system runs to eight, with gas giant Neptune the outermost. Beyond Neptune, Pluto was relegated to the status of "dwarf planet" by the International Astronomical Union in 2006, although it is still championed by some as the most distant planet from the Sun. In a study published in the latest issue of the British journal Monthly Notices of the Royal Astronomical Society, researchers propose that "at...
  • 'Orphan' alien planet with no parent is found near Earth

    11/14/2012 7:55:04 PM PST · by Altariel · 48 replies
    MSNBC ^ | November 14, 2012 | Mike Wall
    Astronomers have discovered a potential "rogue" alien planet wandering alone just 100 light-years from Earth, suggesting that such starless worlds may be extremely common across the galaxy. The free-floating object, called CFBDSIR2149, is likely a gas giant planet four to seven times more massive than Jupiter, scientists say in a new study unveiled Wednesday. The planet cruises unbound through space relatively close to Earth (in astronomical terms), perhaps after being booted from its own solar system. "If this little object is a planet that has been ejected from its native system, it conjures up the striking image of orphaned worlds,...
  • Neptune may have eaten a planet and stolen its moon

    04/03/2010 9:16:58 PM PDT · by SunkenCiv · 25 replies · 771+ views
    New Scientist ^ | March 22, 2010 | David Shiga
    Neptune's own existence was a puzzle until recently. The dusty cloud that gave birth to the planets probably thinned out further from the sun. With building material so scarce, it is hard to understand how Uranus and Neptune, the two outermost planets, managed to get so big. But what if they formed closer in? In 2005, a team of scientists proposed that the giant planets shifted positions in an early upheaval (New Scientist, 25 November 2006, p 40). In this scenario, Uranus and Neptune formed much closer to the sun and migrated outwards, possibly swapping places in the process. That...
  • Milky Way could hold hundreds of rogue black holes: study

    01/09/2008 3:07:12 PM PST · by NormsRevenge · 14 replies · 191+ views
    AFP on Yahoo ^ | 1/09/08 | AFP
    CHICAGO (AFP) - Hundreds of rogue black holes may be roaming around the Milky Way waiting to engulf stars and planets that cross their path, US astronomers said Wednesday. The astronomers believe these "intermediate mass" black holes are invisible except in rare circumstances and have been spawned by mergers of black holes within globular clusters -- swarms of stars held together by their mutual gravity. These black holes are unlikely to pose a threat to Earth, but may engulf nebulae, stars and planets that stray into their paths, the researchers said. "These rogue black holes are extremely unlikely to do...
  • Three New Earth-Size Planets Found "Nearby"

    01/18/2015 2:15:42 PM PST · by dila813 · 32 replies
    Forbes ^ | 1/18/2015 @ 12:00PM | Eric Mack
    The Kepler space telescope has spotted over 1,000 exoplanets beyond our solar system, and its latest finds are three almost Earth-sized planets, including one in the habitable zone circling the star EPIC 201367075, just 150 light years from Earth. In the cosmic sense, that’s right around the block, making it one of the 10 closest known stars with observed planets in its gravitational hold. Of course, such distances in the cosmic sense also would take many generations to traverse, so don’t invest in real estate there just yet. Still, the relative closeness of this “EPIC” star and its planets provides...
  • New Examination of Trans-Neptunian Objects Suggests Two Planets Lurk in Outer Solar System

    01/16/2015 11:06:16 AM PST · by lbryce · 20 replies
    From Quarks to Quasars ^ | January 16, 2015 | James Trosper
    Presently, our solar system is known to contain 4 fully-fledged rocky worlds: Mercury, Venus, Earth and Mars; 2 ice-giants: Neptune and Uranus; 2 gas-giants, Saturn and Neptune; 5 dwarf-planets, Ceres. Pluto, Eris, MakeMake, Haumea; around 100 moons; and an unknowable number of comets, asteroids and minor planets. Indeed, we’ve only begun to understand the full scope of our local corner of our galaxy, and new information emerges on a monthly-basis, yet there a number of seemingly obvious things that remain unknown. For instance, long before Pluto’s existence was deduced, astronomers scoured the outer solar system in search of another large...
  • Astronomers are Predicting at Least Two More Large Planets in the Solar System

    01/15/2015 3:45:27 PM PST · by BenLurkin · 77 replies
    universetoday.com ^ | on January 15, 2015 | Nancy Atkinson
    In their studies, the team analyzed the effects of what is called the ‘Kozai mechanism,’ which is related to the gravitational perturbation that a large body exerts on the orbit of another much smaller and further away object. They looked at how the highly eccentric comet 96P/Machholz1 is influenced by Jupiter (it will come near the orbit of Mercury in 2017, but it travels as much as 6 AU at aphelion) and it may “provide the key to explain the puzzling clustering of orbits around argument of perihelion close to 0° recently found for the population of ETNOs,” the team...
  • 'Bent time' tips pulsar out of view

    01/10/2015 2:33:39 PM PST · by moose07 · 53 replies
    BBC ^ | 9 January 2015 | Jonathan Webb
    A pulsar, one of deep space’s spinning “lighthouses”, has faded from view because a warp in space-time tilted its beams away from Earth. The tiny, heavy pulsar is locked in a fiercely tight orbit with another star. The gravity between them is so extreme that it is thought to emit waves and to bend space - making the pulsar wobble. By tracking its motion closely for five years, astronomers determined the pulsar’s weight and also quantified the gravitational disturbance. Then, the pulsar vanished. Its wheeling beams of radio waves now pass us by, and the researchers have calculated that this...
  • NASA Rover Finds Active and Ancient Organic Chemistry on Mars

    12/16/2014 4:22:20 PM PST · by Islander7 · 23 replies
    JPL ^ | Dec 16, 2014 | Staff
    NASA's Mars Curiosity rover has measured a tenfold spike in methane, an organic chemical, in the atmosphere around it and detected other organic molecules in a rock-powder sample collected by the robotic laboratory's drill. "This temporary increase in methane -- sharply up and then back down -- tells us there must be some relatively localized source," said Sushil Atreya of the University of Michigan, Ann Arbor, a member of the Curiosity rover science team. "There are many possible sources, biological or non-biological, such as interaction of water and rock."
  • The Dark Energy Survey Begins to Reveal Previously Unknown Trans-Neptunian Objects

    01/07/2015 7:35:37 PM PST · by BenLurkin · 15 replies
    universetoday.com ^ | on January 7, 2015 | Tim Reyes
    While asteroids residing in the inner solar system will pass quickly through such small fields, trans-Neptunian objects (TNOs) orbit the Sun much more slowly. For example, Pluto, at an approximate distance of 40 A.U. from the Sun, along with the object Eris, presently the largest of the TNOs, has an apparent motion of about 27 arc seconds per day – although for a half year, the Earth’s orbital motion slows and retrogrades Pluto’s apparent motion. The 27 arc seconds is approximately 1/60th the width of a full Moon. So, from one night to the next, TNOs can travel as much...
  • Stars Passing Close to the Sun

    01/02/2015 11:41:56 AM PST · by LibWhacker · 32 replies
    Centauri Dreams ^ | 1/2/15 | Paul Gilster
    Stars Passing Close to the Sunby Paul Gilster on January 2, 2015 Every time I mention stellar distances I’m forced to remind myself that the cosmos is anything but static. Barnard’s Star, for instance, is roughly six light years away, a red dwarf that was the target of the original Daedalus starship designers back in the 1970s. But that distance is changing. If we were a species with a longer lifetime, we could wait about eight thousand years, at which time Barnard’s Star would close to less than four light years. No star shows a larger proper motion relative to...
  • A Time-Capsule Launched into Space for Aliens to Find When All the Humans Are Gone

    12/04/2012 7:36:38 AM PST · by ExxonPatrolUs · 26 replies
    The Atlantic ^ | 11-30 | Austin Considine
    Billions of years from now, when the earth has erased all traces of our stay here, hundreds of dead satellites will remain in orbit around the earth. Along with these pictures.
  • Gamma Ray Bursts Limit The Habitability of Certain Galaxies, Says Study

    12/11/2014 2:59:54 PM PST · by BenLurkin · 27 replies
    universetoday.com ^ | on December 11, 2014 | by Vanessa Janek
    In fact, according to the authors of the new paper, there is a 90% chance that a GRB powerful enough to destroy Earth’s ozone layer occurred in our stellar neighborhood some time in the last 5 billion years, and a 50% chance that such an event occurred within the last half billion years. These odds indicate a possible trigger for the second worst mass extinction in Earth’s history: the Ordovician Extinction. This great decimation occurred 440-450 million years ago and led to the death of more than 80% of all species.
  • A New Physics Theory of Life

    12/10/2014 2:18:28 PM PST · by LibWhacker · 45 replies
    Quanta Magazine ^ | 1/22/14 | Natalie Wolchover
    A New Physics Theory of Life Katherine Taylor for Quanta MagazineJeremy England, a 31-year-old physicist at MIT, thinks he has found the underlying physics driving the origin and evolution of life. By: Natalie WolchoverJanuary 22, 2014 Comments (151) print Why does life exist?Popular hypotheses credit a primordial soup, a bolt of lightning and a colossal stroke of luck. But if a provocative new theory is correct, luck may have little to do with it. Instead, according to the physicist proposing the idea, the origin and subsequent evolution of life follow from the fundamental laws of nature and “should be as...
  • Martian meteorite may contain evidence of extraterrestrial life

    12/03/2014 6:49:23 AM PST · by etl lll · 64 replies
    cnet.com ^ | Dec 2, 2014 | Michelle Starr
    A meteorite from Mars that landed on Earth in 2011 contains a carbon compound that is biological in origin. (snip) "We cannot and do not want to entirely exclude the possibility that organic carbon within Tissint may be of abiotic origin," Lin wrote, meaning the carbon maybe physical in origin rather than organic -- devoid of life.7 "It could be possible that the organic carbon originated from impacts of carbonaceous chondrite meteorites. However, it is not easy to conceive bywhich processes chondritic carbon could have been selectively extracted from the impacting carbonaceous chondrites, selectively removed from the soil and later...
  • Partial Ingredients For DNA And Protein Found Around Star

    12/31/2005 1:32:58 AM PST · by neverdem · 212 replies · 2,444+ views
    NASA via ScienceDaily.com ^ | 2005-12-30 | NA
    Partial Ingredients For DNA And Protein Found Around Star NASA's Spitzer Space Telescope has discovered some of life's most basic ingredients in the dust swirling around a young star. The ingredients - gaseous precursors to DNA and protein - were detected in the star's terrestrial planet zone, a region where rocky planets such as Earth are thought to be born. The findings represent the first time that these gases, called acetylene and hydrogen cyanide, have been found in a terrestrial planet zone outside of our own. "This infant system might look a lot like ours did billions of years ago,...
  • Chaotic Wombs May Birth Wrong-way Planets

    11/17/2014 9:39:21 AM PST · by BenLurkin · 9 replies
    universetoday.com ^ | on November 17, 2014 | Shannon Hall
    We’ve heard it time and time again. When it comes to new exoplanet findings, our conventional wisdom never holds. So the surprise that a batch of extrasolar planets are moving retrograde, orbiting in directions opposite to the way their stars are spinning, shouldn’t come as a surprise. Then again, maybe it should. These discoveries turned the long-standing view of how planets form on its head. Now Eduard Vorobyov at the University of Vienna and colleagues argue that chaotic conditions in the planetary system’s gaseous wombs may be to blame. Theorists have long assumed that stars and their planetary companions assemble...
  • NASA Builds A Time-Machine Telescope 100 Times As Powerful As The Hubble

    11/18/2014 2:32:23 PM PST · by zeestephen · 67 replies
    MSN.com ^ | 18 November 2014 | Eric Niler
    Inside a very big and very clean room at NASA’s Goddard Space Flight Center in Greenbelt, Md., nearly 30 workers dressed in white protective suits, goggles and blue booties cluster around the parts of a time machine. These parts — gold-covered mirrors, tennis-court-size sun shields, delicate infrared cameras — are slowly being put together to become the James Webb Space Telescope.
  • The Most Stunning View Ever of Planets Being Born

    11/10/2014 10:49:29 AM PST · by Red Badger · 19 replies
    www.thedailybeast.com ^ | 11/09/2014 | Matthew R. Francis
    We can’t see the birth of our own solar system, but an incredible new telescopic image is giving us hints about how planets are born. Humans are cosmic mayflies. Our lives come and go quickly, only offering us glimpses of the slow evolution of the Universe. Human history is measured in centuries, while the birth and death of stars and planets take place over millions and billions of years. For that reason, we will never see the formation of another solar system unfold before our eyes. Instead, astronomers hope to observe planet formation in all its stages, each marking a...
  • Why Scientists Think Completely Unclassifiable and Undiscovered Life Forms Exist

    11/10/2014 1:52:15 PM PST · by 2ndDivisionVet · 22 replies
    Motherboard ^ | November 7, 2014 | Jason Koebler
    In high school biology, we are taught that there are three types of life: eukaryotes (that's us, and most everything else we often think of as life), bacteria, and archaea (extremophiles and other very primitive life forms). But some scientists are pretty sure that there are entirely different, undiscovered lifeforms that could be prevalent on Earth, and they remain undescribed because we're not good at looking for them. In a new paper published in Science, Tanja Woyke and Edward Rubin of the Department of Energy's Joint Genome Institute note that "there are reasons to believe that current approaches [to discovering...
  • Lost in Space: Half of All Stars Are Rogues Between Galaxies

    11/07/2014 1:26:34 PM PST · by BenLurkin · 13 replies
    space.com ^ | Charles Q. Choi
    A star mystery solved? These newfound stars could help solve the so-called "photon underproduction crisis," which suggests that an extraordinary amount of ultraviolet light appears to be missing from the universe. The intergalactic stars could also help address what is known as the "missing baryon problem." Baryons are a class of subatomic particles that includes the protons and neutrons that make up the hearts of atoms inside normal matter. Theories of the formation and evolution of the universe predict there should be far more baryons than scientists currently see. The baryons that astronomers have accounted for in the local cosmic...
  • Vatican astronomer: Just a matter of time until life found in universe

    09/21/2014 2:45:14 PM PDT · by NYer · 78 replies
    cns ^ | September 19, 2014 | Dennis Sadowski
    WASHINGTON (CNS) -- Jesuit Brother Guy Consolmagno, the new president of the Vatican Observatory Foundation, has no doubt that life exists elsewhere in the universe and that when humanity discovers it, the news will come as no big surprise. He suggested that the likely discovery -- whether next month or a millennium from now -- will be received much the way that news of planets orbiting far off stars has filtered in since the 1990s. "The general public is going to be, 'Oh, I knew that. I knew it was going to be there,'" Brother Consolmagno told Catholic News...
  • Sea plankton 'found living outside International Space Station'

    08/22/2014 6:19:50 AM PDT · by shove_it · 52 replies
    Telegraph ^ | 21 Aug 2014 | Sarah Knapton,
    Sea plankton has been discovered living on the outside of the International Space Station, Russian cosmonauts have claimed. Scientists on board the ISS are reported to have discovered living organisms when taking samples from windows. Head of the Russian ISS orbital mission Vladimir Solovyev said the results of the experiment “are absolutely unique”. Solovyev told the Russian Itar-Tass news agency that the tiny marine life-forms were not native to the launch site in Kazakhstan. “Plankton in these stages of development could be found on the surface of the oceans,” he said. “This is not typical for Baikonur [in Kazakhstan]. It...
  • Weak supernova might have left zombie star

    08/07/2014 10:32:03 AM PDT · by ConservingFreedom · 13 replies
    EarthSky ^ | Aug 07, 2014 | Science Wire, Space
    Astronomers are scrutinizing a star system in a distant galaxy that exploded, possibly leaving behind a zombie star. They say their study of this system will help them understand supernova explosions, which are an important piece of the cosmic puzzle, used to help measure distances in vast space and the expansion of the universe. Standard Type Ia supernovae occur when a white dwarf draws enough material from a companion star onto itself to raise its own core temperature, ultimately creating a runaway nuclear reaction that causes the white dwarf to explode as a supernova. In such cases, the explosion typically...
  • All (known) Bodies in our Solar System Larger than 200 Miles in Diameter (88 in all) - (pic)

    07/27/2014 11:23:33 AM PDT · by LibWhacker · 34 replies
  • Public gets to nominate and vote on exoplanet names

    07/24/2014 6:55:59 AM PDT · by null and void · 15 replies
    Electronic Products ^ | 07/14/2014 | Max_Teodorescu
    Sorry, no pop-culture referencesAstronomers have amassed such a gigantic database of identifiable celestial bodies, that naming these objects has largely fallen wayside in favor of efficiency. Devoting time and creative energy cooking up a unique name for a dot in the sky is not worth NASA’s (or other space agencies) time, considering the millions of stars in the observable universe. Exoplanets, planets orbiting a star other than our own, are a different story. Our spacecrafts and telescopes have only spotted about 1800 of them, including the first potentially habitable Earth-sized planet, a planet anticlimactically named Kepler-186F. This is all about...
  • An Earth-sized planet that might hold liquid water

    07/08/2014 4:03:30 PM PDT · by robowombat · 22 replies
    Space Daily ^ | Apr 27, 2014
    An Earth-sized planet that might hold liquid water by Staff Writers Ann Arbor MI (SPX) Apr 27, 2014 An artist's conception of the newly discovered exoplanet Kepler-186f orbiting the red dwarf star Kepler-186. The planet is the first Earth-sized world to be found orbiting a star at a distance that would allow it to harbor liquid water, a necessary ingredient for life as we know it. Image courtesy NASA/Ames/JPL-Caltech/T. Pyle. In a dim and faraway solar system, astronomers have for the first time discovered a rocky, Earth-sized planet that might hold liquid water-a necessary ingredient for life as we know...
  • Astronomy: Planets in chaos. Standard ideas of Planet formation are being demolished

    07/08/2014 2:09:26 PM PDT · by SeekAndFind · 19 replies
    NATURE ^ | 07/02/2014 | Ann Finkbeiner
    The discovery of thousands of star systems wildly different from our own has demolished ideas about how planets form. Astronomers are searching for a whole new theory. Not so long ago — as recently as the mid-1990s, in fact — there was a theory so beautiful that astronomers thought it simply had to be true. They gave it a rather pedestrian name: the core-accretion theory. But its beauty lay in how it used just a few basic principles of physics and chemistry to account for every major feature of our Solar System. It explained why all the planets orbit the...
  • Mars' minerals could be microbe made

    06/19/2014 4:35:53 PM PDT · by JimSEA · 14 replies
    ABC Science ^ | 5/23/2014 | Stuart Gary
    Friday, 23 May 2014 Stuart Gary ABC New Australian research suggests Martian minerals may have formed from biological rather than geological origins. The findings, reported in the journal Geology, indicate the mineral stevensite, which is found on both Earth and Mars, can be created either in hot, highly alkaline volcanic lakes, or by mineralisation in living microbes. Stevensite is a magnesium-silicate mineral, used a Nubian beauty treatment for several centuries.
  • Where To Go After Pluto? Hubble Seeks The Next Target For New Horizons

    06/17/2014 8:24:26 AM PDT · by BenLurkin · 8 replies
    universetoday.com ^ | June 17, 2014 | Elizabeth Howell on
    Hubble Space Telescope (in Earth orbit) is scoping out icy objects beyond Pluto. What astronomers are doing now is a “pilot observation” where the space telescope looks at a spot in the constellation Sagittarius. Controllers will try to turn the telescope at the same rate as what a KBO would be orbiting around the sun. If the method works, stars will look like streaks and the KBOs will look like “pinpoint objects”, NASA stated. “If the test observation identifies at least two KBOs of a specified brightness it will demonstrate statistically that Hubble has a chance of finding an appropriate...
  • New 'Gas Dwarf' Class of Alien Planets Revealed

    06/02/2014 1:51:22 PM PDT · by BenLurkin · 22 replies
    NBC ^ | Nola Taylor Redd, SPACE.com
    These gas-dwarf alien planets have thick atmospheres like their larger gas-giant cousins but never quite made it to the size of the planetary behemoths found in the Earth's the outer solar system, researchers said. The team studied more than 600 planets discovered by NASA's Kepler space telescope and compared their sizes to the amount of elements other than hydrogen and helium contained in their star — a characteristic known as metallicity. "We were particularly interested in probing the planetary regime smaller than four times the size of Earth, because it includes three-fourths of the planets found by Kepler," lead author...
  • Astronomers find Sun's 'long-lost brother,' pave way for family reunion

    05/09/2014 1:21:14 PM PDT · by Red Badger · 8 replies
    Phys.Org ^ | 05-09-2014 | Provided by University of Texas at Austin
    (Phys.org) —A team of researchers led by astronomer Ivan Ramirez of The University of Texas at Austin has identified the first "sibling" of the sun—a star almost certainly born from the same cloud of gas and dust as our star. Ramirez's methods will help astronomers find other solar siblings, which could lead to an understanding of how and where our sun formed, and how our solar system became hospitable for life. The work appears in the June 1 issue of The Astrophysical Journal. "We want to know where we were born," Ramirez said. "If we can figure out in what...
  • The Shocking Behavior of a Speedy Star

    04/29/2014 5:20:41 PM PDT · by SunkenCiv · 16 replies
    Scientific Computing ^ | Friday, April 25, 2014 | NASA
    Roguish runaway stars can have a big impact on their surroundings as they plunge through the Milky Way galaxy. Their high-speed encounters shock the galaxy, creating arcs, as seen in this newly released image from NASA’s Spitzer Space Telescope. In this case, the speedster star is known as Kappa Cassiopeiae, or HD 2905 to astronomers. It is a massive, hot supergiant moving at around 2.5 million mph relative to its neighbors (1,100 kilometers per second). But what really makes the star stand out in this image is the surrounding, streaky red glow of material in its path. Such structures are...
  • It’s Freezing on the Surface of this Nearby Star-like Object Read more:

    04/29/2014 1:34:18 PM PDT · by BenLurkin · 26 replies
    universetoday.com ^ | April 29, 2014 | Shannon Hall on
    A brown dwarf that’s as frosty as the Earth’s North Pole has been discovered lurking incredibly close to our Solar System. Astronomer Keven Luhman from Pennsylvania State University used NASA’s Wide-field Infrared Survey Explorer (WISE) and the Spitzer Space Telescope to pinpoint the object’s temperature and distance. This is the coldest brown dwarf found so far, and it’s a mere 7.2 light-years away, making it the seventh closest star-like object to the Sun. “It is very exciting to discover a new neighbor of our Solar System that is so close,” said Luhman in a press release. Brown dwarfs emerge when...