Search results for comet
Did ancient Mars have a runaway greenhouse?
Cosmic impacts that once bombed Mars might have sent temperatures skyrocketing upward on the Red Planet in ancient times, enough to set warming of the surface on a runaway course, researchers say.
Space & Earth / Space Exploration
May 24, 2012 |
3 / 5 (4) |
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Asteroid nudged by sunlight: Most precise measurement of Yarkovsky effect
Scientists on NASA's asteroid sample return mission, Origins, Spectral Interpretation, Resource Identification, Security, Regolith Explorer (OSIRIS-REx), have measured the orbit of their destination asteroid, ...
Space & Earth / Space Exploration
May 24, 2012 |
4.9 / 5 (8) |
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A new look at Apollo samples supports ancient impact theory
New investigations of lunar samples collected during the Apollo missions have revealed origins from beyond the Earth-Moon system, supporting a hypothesis of ancient cataclysmic bombardment for both worlds.
Space & Earth / Space Exploration
May 24, 2012 |
5 / 5 (3) |
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Extremely rare transit of Venus to occur on June 5, 2012
A few hours before sunset on June 5th, 2012 residents of the Washington, DC metropolitan area will have a chance to witness one of the rarest celestial phenomena known: a “Transit of Venus”.
May 23, 2012 |
5 / 5 (5) |
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A planetary system that never was teaches about those that may be
While Kepler and similar missions are turning up planets by the fist full, there’s long been many places that astronomers haven’t expected to find planetary systems. The main places include regions ...
May 23, 2012 |
4.5 / 5 (2) |
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Research team claims to have found evidence Lake Cheko is impact crater for Tunguska Event
(Phys.org) -- Early on the morning of June 30th, 1908, a huge explosion occurred in a remote part of Siberia near the Podkamennaya Tunguska River. So great was the blast that trees were knocked down in neat ...
Space & Earth / Earth Sciences
May 21, 2012 |
4.5 / 5 (24) |
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Newfound exoplanet may turn to dust
Researchers at MIT, NASA and elsewhere have detected a possible planet, some 1,500 light years away, that appears to be evaporating under the blistering heat of its parent star. The scientists infer that a ...
May 18, 2012 |
4.4 / 5 (10) |
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Study of moon rocks shows barrage 4 billion years ago was mainly asteroids
(Phys.org) -- Researchers have known for some years that the Earth and moon were subjected to a veritable barrage of objects striking their surfaces nearly four million years ago, but less certain was whether ...
Space & Earth / Space Exploration
May 18, 2012 |
3.2 / 5 (6) |
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Robotic spacecraft / rover hybrids for space exploration
The big news from space exploration is that small bodies in the cosmos offer tantalizing insight about the very formation of our solar system. So what strategy can be employed to inspect these mini-worlds ...
Space & Earth / Space Exploration
May 16, 2012 |
5 / 5 (1) |
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Asteroid collision that spawned Vesta's asteroid family occurred more recently than thought
A team of researchers led by a NASA Lunar Science Institute (NLSI) member based at Southwest Research Institute has discovered evidence that the giant impact crater Rheasilvia on Asteroid (4) Vesta was created ...
Space & Earth / Space Exploration
May 10, 2012 |
4.8 / 5 (4) |
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You're beautiful, Vesta
When UCLA's Christopher T. Russell looks at the images of the protoplanet Vesta produced by NASA's Dawn mission, he talks about beauty as much as he talks about science.
Space & Earth / Space Exploration
May 10, 2012 |
5 / 5 (4) |
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Black hole caught red-handed in a stellar homicide
(Phys.org) -- Astronomers have gathered the most direct evidence yet of a supermassive black hole shredding a star that wandered too close.
May 07, 2012 |
4 / 5 (5) |
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Fragments of meteorite worth their weight in gold
Actually it’s more like 3.5 times their weight in gold, according to today’s market value… and meteorite experts from SETI and NASA’s Marshall Space Flight Center.
Space & Earth / Space Exploration
May 02, 2012 |
5 / 5 (2) |
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Pacific islands may become refuge for corals in a warming climate, study finds
Scientists have predicted that ocean temperatures will rise in the equatorial Pacific by the end of the century, wreaking havoc on coral reef ecosystems. But a new study shows that climate change could cause ocean currents ...
Apr 29, 2012 |
3.7 / 5 (3) |
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Swift satellite monitors departing Comet Garradd
(Phys.org) -- An outbound comet that provided a nice show for skywatchers late last year is the target of an ongoing investigation by NASA's Swift satellite. Formally designated C/2009 P1 (Garradd), the unusually ...
Space & Earth / Space Exploration
Apr 13, 2012 |
4.3 / 5 (3) |
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