News tagged with comet collision
When is a comet not a comet? Rosetta finds out
(PhysOrg.com) -- It was a case of celestial hit and run. Two asteroids, both in the wrong place at the wrong time. The result: one big trail of debris and a case of mistaken identity. Now, however, ESA’s ...
Space & Earth / Space Exploration
Oct 14, 2010 |
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Crashing comets not likely the cause of Earth's mass extinctions: new research
(PhysOrg.com) -- Scientists have debated how many mass extinction events in Earth's history were triggered by a space body crashing into the planet's surface. Most agree that an asteroid collision 65 million ...
Space & Earth / Space Exploration
Jul 30, 2009 |
3.7 / 5 (18) |
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Search results for comet collision
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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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 |
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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 |
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Splatters of molten rock signal period of intense asteroid impacts on Earth
New research reveals that the Archean era — a formative time for early life from 3.8 billion years ago to 2.5 billion years ago — experienced far more major asteroid impacts than had been previously ...
Space & Earth / Space Exploration
Apr 25, 2012 |
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Tiny 'spherules' reveal details about Earth's asteroid impacts
(Phys.org) -- Researchers are learning details about asteroid impacts going back to the Earth's early history by using a new method for extracting precise information from tiny "spherules" embedded in layers ...
Space & Earth / Earth Sciences
Apr 25, 2012 |
5 / 5 (1) |
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Herschel spots comet massacre around nearby star
(Phys.org) -- ESA’s Herschel Space Observatory has studied the dusty belt around the nearby star Fomalhaut. The dust appears to be coming from collisions that destroy up to thousands of icy comets every ...
Apr 12, 2012 |
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Newfangled space-propulsion technology could help clean up Earth orbit
(Phys.org) -- Some of the most valuable “real estate” for humans isn’t on Earth at all but rather above the planet’s atmosphere, where all manner of human-made objects orbit. The problem ...
Space & Earth / Space Exploration
Apr 11, 2012 |
4.7 / 5 (18) |
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CODITA: measuring the cosmic dust swept up by the Earth
Although we think of space as being empty, there is more out there than meets the eye – dust, for example, is everywhere. If all the material between the Sun and Jupiter were compressed together it would ...
Space & Earth / Space Exploration
Mar 30, 2012 |
4 / 5 (4) |
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The earliest stages of planet formation
(PhysOrg.com) -- Small dust particles in a disk of gas around a young star, according to current models, gradually coagulate during the first million years until kilometer-sized objects are formed. These in ...
Mar 26, 2012 |
4.7 / 5 (3) |
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Researchers create computer simulations of primordial black holes striking the Earth
(PhysOrg.com) -- Black holes have captured the imagination of scientists and amateur enthusiasts for years. The idea of some dark entity out there in the far reaches of space sucking up anything and everything ...
Mar 23, 2012 |
3.9 / 5 (14) |
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List of search results for comet collision
