Simulations unravel mysteries of 2009 Jupiter impact
Study supports theory of extraterrestrial impact
A 16-member international team of researchers that includes James Kennett, professor of earth science at UC Santa Barbara, has identified a nearly 13,000-year-old layer of thin, dark sediment buried in the ...
Purdue unveils 'Impact: Earth!' asteroid impact effects calculator
(PhysOrg.com) -- Purdue University on Wednesday (Nov. 3) unveiled ''Impact: Earth!'' a new website that allows anyone to calculate the potential damage a comet or asteroid would cause if it hit the Earth.
Life on Earth shockingly comes from out of this world
(Phys.org) —Early Earth was not very hospitable when it came to jump starting life. In fact, new research shows that life on Earth may have come from out of this world.
No evidence for ancient comet or Clovis catastrophe, archaeologists say
(PhysOrg.com) -- New research challenges the controversial theory that the impact of an ancient comet devastated the Clovis people, one of the earliest known cultures to inhabit North America.
Villain in disguise: Jupiter's role in impacts on Earth
Jupiter is often credited for shielding Earth from catastrophic asteroid and comet impacts. But new simulations of the influence of gas giant planets in solar systems casts doubt on Jupiter's reputation as ...
The comet cometh: Hartley 2 visible in night sky
(PhysOrg.com) -- Backyard stargazers with a telescope or binoculars and a clear night's sky can now inspect the comet that in a little over two weeks will become only the fifth in history to be imaged close ...
Study rebuts hypothesis that comet attacks ended 9,000-year-old Clovis culture
(Phys.org)—Rebutting a speculative hypothesis that comet explosions changed Earth's climate sufficiently to end the Clovis culture in North America about 13,000 years ago, Sandia lead author Mark Boslough ...
NASA spacecraft unravels comet mystery
A NASA spacecraft's flyby with a comet showed erosion on the Tempel 1's surface since it skimmed by the Sun in 2005, and revealed Tuesday the first clear pictures of the crater made by a Deep Impact probe.
Getting WISE About Nemesis
Is our Sun part of a binary star system? An unseen companion star, nicknamed 'Nemesis,' may be sending comets towards Earth. If Nemesis exists, NASA's new WISE telescope should be able to spot it.
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 ...
Deep Impact mission ends, leaves bright comet tale
(Phys.org) —NASA today announced the end of operations for the Deep Impact spacecraft, history's most traveled deep-space comet hunter, after trying unsuccessfully for more than a month to regain contact ...
Topper site in middle of comet controversy
(Phys.org)—Did a massive comet explode over Canada 12,900 years ago, wiping out both beast and man in North America and propelling the earth back into an ice age?
Comet cause for climate change theory dealt blow by fungus
(PhysOrg.com) -- A team of scientists - led by Professor Andrew C Scott of the Department of Earth Sciences at Royal Holloway, University of London - have revealed that neither comet nor catastrophe were the ...