Astronomy News and Research Archives Page 12
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 | A new map obtained with SMART-1 data shows the geography and illumination of the lunar north pole. Such maps will be of great use for future lunar explorers. ...> Full Article |
If a trip to Mars seems like it would be a tough journey, imagine what it would be like on the outside of the spaceship.
...> Full Article
 | Faint, fleeting blue flashes of radiation emitted by particles that travel faster than the speed of light through the atmosphere may help scientists solve one of the oldest mysteries in astrophysics. ...> Full Article |
 | A dwarf star with a surprisingly magnetic personality and a huge hot spot covering half its surface area is showing astronomers that life as a cool dwarf is not necessarily as simple and quiet as they once assumed. ...> Full Article |
 | Planetary scientists at UCL have identified the point at which a star causes the atmosphere of an orbiting gas giant to become critically unstable, as reported in this week's Nature (December 6). Depending upon their proximity to a host star, giant Jupiter-like planets have atmospheres which are either stable and thin, or unstable and rapidly expanding. This new research enables us to work out whether planets in other systems are stable or unstable by using a three dimensional model to characterise their upper atmospheres. ...> Full Article |
 | Spectacular images and data from the Hinode mission have shed new light on the Sun's magnetic field and the origins of solar wind, which can disrupt power grids, satellites and communications on Earth. ...> Full Article |
 | Tom Nichols, a mechanical engineer at Lockheed Martin in Palo Alto, works on the HMI. ...> Full Article |
 | University of British Columbia astronomer Harvey Richer and UBC graduate student Saul Davis have discovered that white dwarf stars are born with a natal kick, explaining why these smoldering embers of Sun-like stars are found on the edge rather than at the centre of globular star clusters. ...> Full Article |
 | Dark Matter in Newborn Universe Doused Earliest Stars ...> Full Article |
 | Astronomers at the University of Illinois have found the first clear evidence for a cradle in space where planets and moons form. The cradle, revealed in photographs taken with NASA's Spitzer Space Telescope, consists of a flattened envelope of gas and dust surrounding a young protostar. ...> Full Article |
The annual Geminid meteor shower will peak on the night of Dec. 13-14. The Geminids usually offer the best show of the year, outperforming even the better-known Perseid meteor shower of August. But watching the Perseids is a pleasant way to spend a warm summer evening, while waiting outdoors on a winter night for Geminids is a bit like sitting in a refrigerator and trying to think about global warming. It can be hard to concentrate.
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 | Right in time for the festive season, ESA's XMM-Newton X-ray observatory has discovered a huge cloud of high-temperature gas resting in a spectacular nearby star-forming region, shaped somewhat like the silhouette of Santa Claus. ...> Full Article |
 | Hubble has sent back an early Christmas card with this new NASA/ESA Hubble Space Telescope image of the nearby spiral galaxy Messier 74. It is an enchanting reminder of the impending season. Resembling glittering baubles on a holiday wreath, bright knots of glowing gas light up the spiral arms, with regions of new star birth shining in pink. ...> Full Article |
 | Scientists analysing data gathered by the Cassini spacecraft have confirmed the presence of heavy negative ions in the upper regions of Titan's atmosphere. These particles may act as organic building blocks for even more complicated molecules and their discovery was completely unexpected because of the chemical composition of the atmosphere (which lacks oxygen and mainly consists of nitrogen and methane). The observation has now been verified on 16 different encounters and findings will be published in Geophysical Research Letters on November 28. ...> Full Article |
 | Researchers using supercomputer simulations have exposed a very violent and critical relationship between interstellar gas and dark matter when galaxies are born -- one that has been largely ignored by the current model of how the universe evolved. ...> Full Article |
 | Astronomers have found what are believed to be some of the youngest solar systems yet detected. ...> Full Article |
 | Using a computer model simulation, Haruichi Washimi, a physicist at UC Riverside, has predicted when the interplanetary spacecraft Voyager 2 will cross the "termination shock," the spherical shell around the solar system that marks where the solar wind slows down to subsonic speed. ...> Full Article |
 | ESA's Venus Express has revealed Venus as never before. For the first time, scientists are able to investigate from the top of its atmosphere, down nearly to the surface. They have shown it to be a planet of surprises that may once have been more Earth-like, and still is, to a certain extent. ...> Full Article |
 | In the early 1900s, Edwin Hubble made the startling discovery that our Milky Way galaxy is not alone. It is just one of many galaxies, or "island universes," as Hubble dubbed them, swimming in the sea of space. ...> Full Article |
 | VLT takes the search for young galaxies to new limits ...> Full Article |
 | Comet 17P/Holmes, which dazzled sky watchers with a dramatic outburst that made it visible to the unaided eye, now is fading from sight. However, before it returns to the obscurity from which it came, astronomers at the MMT Observatory took a final look. ...> Full Article |
New research led by a University of St Andrews astronomer has found evidence for what might be the raw material for the beginning of shrunken versions of our solar system - miniature worlds in the making.
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Mars was covered in an ocean of molten rock for about 100 million years after the planet formed, researchers from the Lunar and Planetary Institute in Houston, Texas, UC Davis, and NASA's Johnson Space Center have found. The work is published in the journal Nature on Nov. 22.
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 | SRON astronomer Floris van der Tak is the first to have observed acidic particulate clouds outside of our own Milky Way galaxy. He did this by focusing the James Clerk Maxwell Telescope, located on Hawaii, on two nearby Milky Way galaxies. Astronomers think that acidification inhibits the formation of stars and planets in the dust clouds. Now it is a case of waiting for precise measurements from the SRON-built HIFI space instrument that will be launched on the Herschel space telescope next year. ...> Full Article |
 | Astronomers have discovered white dwarf stars with pure carbon atmospheres. These stars possibly evolved in a sequence astronomers didn't know before. ...> Full Article |
 | The next time you take a moonlit stroll, or admire a full, bright-white moon looming in the night sky, you might count yourself lucky. New observations from NASA's Spitzer Space Telescope suggest that moons like Earth's - that formed out of tremendous collisions - are uncommon in the universe, arising at most in only five to 10 percent of planetary systems. ...> Full Article |
 | Hollywood thrillers such as "Deep Impact" helped to jump-start America's interest in knowing what our "deflection strategy" would be if a giant asteroid was on a potentially catastrophic collision course with Earth. ...> Full Article |
 | Astronomers are searching for gravitational waves in space, a feat that would literally change what we know about the cosmos. Using new tools to look at the universe, says Patrick Brady, often has led to discoveries that change the course of science. History is full of examples. ...> Full Article |
The annual Leonid meteor shower will peak early Sunday morning, Nov. 18. This reliable, but sparse, annual shower usually produces about five to 15 meteors per hour under dark skies.
...> Full Article
 | A supernova observed last year was so bright--about 100 times as luminous as a typical supernova--that it challenged the theoretical understanding of what causes supernovae. But Stan Woosley, professor of astronomy and astrophysics at the University of California, Santa Cruz, had an idea that he thought could account for it--an extremely massive star that undergoes repeated explosions. When Woosley and two colleages worked out the detailed calculations for their model, the results matched the observations of the supernova known as SN 2006gy, the brightest ever recorded. ...> Full Article |
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