Earth's surface transformed by massive asteroids

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A cluster of at least three asteroids between 20 and 50 kilometres across colliding with Earth over 3.2 billion years ago caused a massive change in the structure and composition of the earth’s surface, according to new research by ANU earth scientists.


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All News summaries for August 05, 2005

Spacecraft flies by remote asteroid, camera stops (Update)

Sep 05, 2008 | User rating: not rated yet
(AP) -- The European deep space probe Rosetta successfully completed a flyby of an asteroid millions of miles from earth, but its high resolution camera stopped shortly before the closest pass, space officials ...

NASA delays Hubble mission 2 days due to storms

Sep 05, 2008 | User rating: not rated yet
(AP) -- NASA has delayed next month's space shuttle launch to the Hubble Space Telescope by two days.

Spiky Probe on NASA Mars Lander Raises Vapor Quandary

Sep 05, 2008 | User rating: not rated yet
(PhysOrg.com) -- A fork-like conductivity probe has sensed humidity rising and falling beside NASA's Phoenix Mars Lander, but when stuck into the ground, its measurements so far indicate soil that is thoroughly ...

Cassini Images Ring Arcs Among Saturn's Moons

Sep 05, 2008 | User rating: not rated yet
(PhysOrg.com) -- NASA's Cassini spacecraft has detected a faint, partial ring orbiting with one small moon of Saturn, and has confirmed the presence of another partial ring orbiting with a second moon. This ...

Astronomer Discovers Upper Mass Limit for Black Holes

Sep 05, 2008 | User rating: not rated yet
There appears to be an upper limit to how big the universe’s most massive black holes can get, according to new research led by a Yale University astrophysicist.
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