Seawater holds clues to ancient asteroid impacts: related news

Seawater holds clues to ancient asteroid impacts

Asteroids that strike Earth have cosmic origins, but clues to the size of ancient impactors now have come from a decidedly Earth-bound source: the chemistry of ancient seawater.

Seawater holds clues to asteroid impacts

Asteroids that strike Earth have cosmic origins, but clues to the size of ancient impactors now have come from a decidedly Earth-bound source: the chemistry of ancient seawater.

Seawater Holds Clues to Asteroid ImpactsMars Moon Seen Up CloseNew Super-Earth is Smallest YetScientists: Three Black Holes Can MergeSolar Wind Source FoundMassive Star Mystery: Do They Explode?Star Theory Gets New SpinMoon Seen as Laboratory for Lif

Asteroids that strike Earth have cosmic origins, but clues to the size of ancient impactors now have come from a decidedly Earth-bound source: the chemistry of ancient seawater.

Seawater Holds Clues to Asteroid Impacts

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Ancient asteroid mystery in Austrian Alps 'solved'

LONDON: Scientists claim to have solved the mystery of a giant asteroid impact on Austrian Alps more than 5,000 years back, by deciphering an ancient clay tablet.

Ancient asteroid mystery in Austrian Alps 'solved'

London (PTI): Scientists claim to have solved the mystery of a giant asteroid impact on Austrian Alps more than 5,000 years back, by deciphering an ancient clay tablet.

Ancient tablet solves asteroid mystery

British scientists have deciphered a mysterious ancient clay tablet and believe they have solved a riddle over a giant asteroid impact more than 5,000 years ago.

Ancient tablet cracks asteroid mystery

LONDON: Scientists claim to have solved the mystery of a giant asteroid impact on Austrian Alps more than 5,000 years back, by deciphering an ancient clay tablet.

Clay Tablet Holds Clue to Asteroid Mystery

British scientists have deciphered a mysterious ancient clay tablet and believe they have solved a riddle over a giant asteroid impact more than 5,000 years ago.

Clay tablet holds clue to asteroid mystery

British scientists have deciphered a mysterious ancient clay tablet and believe they have solved a riddle over a giant asteroid impact more than 5,000 years ago.

Asteroid BB Gun

Meteors, Comets and Asteroids Summary (May 10, 2008): Researchers confirm that asteroid impacts can strike with enough force to liquefy carbon deep in the Earth's crust and eject it skyward to form beads that then blanket the planet. The finding is helping scientists interpret how past impacts effected life on Earth.

Missing Link Between Planets and Stars FoundSeawater Holds Clues to Asteroid ImpactsMars Moon Seen Up CloseNew Super-Earth is Smallest YetScientists: Three Black Holes Can MergeSolar Wind Source FoundMassive Star Mystery: Do They Explode?Star Theory

The difference between brown dwarfs and planets, based on conventional theory. Credit: Robert Roy Britt, SPACE.com.

Intelligence: A Rare Cosmic CommodityMissing Link Between Planets and Stars FoundSeawater Holds Clues to Asteroid ImpactsMars Moon Seen Up CloseNew Super-Earth is Smallest YetScientists: Three Black Holes Can MergeSolar Wind Source Found

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Intelligence: A Rare Cosmic CommodityMissing Link Between Planets and Stars FoundSeawater Holds Clues to Asteroid ImpactsMars Moon Seen Up CloseNew Super-Earth is Smallest YetScientists: Three Black Holes Can MergeSolar Wind Source FoundMassive Star

University of East Anglia Professor Andrew Watson developed a mathematical model showing that intelligent life is probably rare in the universe. Credit: Andrew Watson

Lunar Science Community Needs Rebuilding, Researchers SayIntelligence: A Rare Cosmic CommodityMissing Link Between Planets and Stars FoundSeawater Holds Clues to Asteroid ImpactsMars Moon Seen Up CloseNew Super-Earth is Smallest YetScientists: Three

This still image was cut out from a moving image taken by the HDTV onboard the KAGUYA then sent to the JAXA Usuda Deep Space Center. The Moon's surface is near the South Pole, and you can Australia (center left) and Asia (lower right) on the Earth. (In this image, the upper side of the Earth is the Southern Hemisphere, thus the Australian Continent looks upside-down.) Credit: JAXA/NHK.

Ancient ocean-floor sediment shows asteroid sizes

Countless asteroids have struck Earth during its multi-billion-year history, leaving few clues to their size because they vaporize on impact and leave no crater or fall into the ocean.

Ancient ocean-floor sediment shows asteroid sizes

BEIJING, April 16 (Xinhuanet) -- Countless asteroids have struck Earth during its multi-billion-year history, leaving few clues to their size because they vaporize on impact and leave no crater or fall into the ocean.

Ancient ocean-floor sediment shows asteroid sizes

BEIJING, April 16 (Xinhuanet) -- Countless asteroids have struck Earth during its multi-billion-year history, leaving few clues to their size because they vaporize on impact and leave no crateror fall into the ocean.

Ancient ocean-floor sediment shows asteroid sizes

BEIJING, April 16 (Xinhuanet) -- Countless asteroids have struck Earth during its multi-billion-year history, leaving few clues to their size because they vaporize on impact and leave no crater or fall into the ocean.

NASA Statement on Student Asteroid Calculations Regarding Asteroid Apophis Collision

April 16, 2008 -- WASHINGTON -- The Near-Earth Object Program Office at NASA's Jet Propulsion Laboratory in Pasadena, Calif., has not changed its current estimates for the very low probability (1 in 45,000) of an Earth impact by the asteroid Apophis in 2036.

Asteroid that killed dinosaurs downsized

The asteroid that wiped out the dinosaurs may not have been the whopper scientists thought. An analysis of the chemical remains of the asteroid that can be found in sediment under the sea today shows the rock was about 2 1/2 miles wide, according to Francois Paquay, a geology graduate student at the University of Hawaii at Manoa. That's significantly smaller than the estimates of up to 12 miles wide that past researchers had suggested was the size of the dinosaur-killer, according to the research published Friday in the journal Science.

Asteroid destroyed Sodom: Researchers

A clay tablet that puzzled scientists for 150 years was identified as an account of an asteroid suspected of destroying Sodom and Gomorrah. Researchers believe the cuneiform symbols on the Planisphere tablet record an asteroid thought to have been more than half a mile across.

Unearthing Clues Of Catastrophic Earthquakes

The destruction and disappearance of ancient cultures mark the history of human civilization, making for fascinating stories and cautionary tales. The longevity of today's societies may depend upon separating fact from fiction, and archaeologists and seismologists are figuring out how to join forces to do just that with respect to ancient earthquakes, as detailed in new studies presented at the international conference of the Seismological Society of America.

Killer asteroid not as huge as believed?

An analysis of the chemical remains of the asteroid that can still be found in sediments under the sea today shows the rock was about four kilometres wide, according to Francois Paquay, a geology professor at the University of Hawaii. That's less than half the 9.6-kilometre-wide space boulder that past researchers have suggested was the dinosaur-killer, according to the research published Friday in the journal Science. The dinosaurs, which ruled Earth for 160 million years, went extinct at the end of the Cretaceous period about 65 million years ago. The killer asteroid theory was bolstered two decades ago, when scientists found in rocks dating from the Cretaceous period a band of iridium, a metal rare on Earth but common in meteorites. The later discovery of the 177-kilometre-wide Chicxulub crater off Mexico's Yucatan peninsula seemingly

Beetle offers clue to ancient pest control

Israeli researchers said an ancient beetle provides clues to how the Bible's Joseph the Dreamer was able to keep the people of Egypt from starving.

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