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Latest Impact event Stories

2008-01-23 14:57:25

Dinosaur doomsday was wetter than scientists have thought, according to new images of the crater where the space rock that likely killed the dinosaurs landed. Sixty-five million years ago the asteroid struck the coast of the Yucatan Peninsula, and most scientists think this event played a large role in causing the extinction of 70 percent of life on Earth, including non-avian dinosaurs. Geophysicists now have created the most detailed 3-D seismic images yet of the mostly...

2008-01-09 11:50:00

An impact with Mars by an approaching asteroid is now believed by scientists to be less likely than before. New estimates of the asteroid's orbit were made using observations from a telescope at the Calar Alto Observatory in Spain, according to the Near-Earth Object Program at NASA's Jet Propulsion Laboratory. The probability of impact was reduced to 2.5 percent reported in a January 8 update posted on the NEO website. The distance it is believed to miss Mars by is about 18,600 miles. Dubbed...

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2007-12-20 21:00:00

By ALICIA CHANG LOS ANGELES - Mars could be in for an asteroid hit. A newly discovered hunk of space rock has a 1 in 75 chance of slamming into the Red Planet on Jan. 30, scientists said Thursday. "These odds are extremely unusual. We frequently work with really long odds when we track ... threatening asteroids," said Steve Chesley, an astronomer with the Near Earth Object Program at NASA's Jet Propulsion Laboratory. The asteroid, known as 2007 WD5, was discovered in late November and is...

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2007-10-31 08:35:00

The Great Dying 250 million years ago happened slowly, according to USC geologists USC -- The greatest mass extinction in Earth's history also may have been one of the slowest, according to a study that casts further doubt on the extinction-by-meteor theory. Creeping environmental stress fueled by volcanic eruptions and global warming was the likely cause of the Great Dying 250 million years ago, said USC doctoral student Catherine Powers. Writing in the November issue of the journal...

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2007-09-20 17:15:00

Every now and then a space rock hits the world's media "“ sometimes almost literally. Threatening asteroids that zoom past the Earth, fireballs in the sky seen by hundreds of people and mysterious craters which may have been caused by impacting meteorites; all make ESA's planned mission Don Quijote look increasingly timely. The uncertainty surrounding whether a meteorite impacted in South America recently highlights the need to know more about these pieces of natural space debris and...

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2007-09-10 17:42:15

The impactor believed to have wiped out the dinosaurs and other life forms on Earth some 65 million years ago has been traced back to a breakup event in the main asteroid belt. The finding provides insights into one of the most important extinction events in Earth's history. Known as the Cretaceous-Tertiary (K-T) extinction, this impact event signaled a dramatic change in the evolutionary history of Earth. Understanding the origins and effects of this event can not only teach us about the...

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2007-05-25 00:00:00

ACAPULCO, Mexico -- There's a new extraterrestrial suspect in the mysterious, highly debated disappearance of the woolly mammoth some 12,900 years ago. A team of two dozen scientists say the culprit was likely a comet that exploded in the atmosphere above North America. The explosions sent a heat and shock wave across the continent, pelted the ground with a layer of telltale debris, ignited massive wildfires, and triggered a major cooling of the climate said nuclear analytic chemist...

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2006-10-24 10:15:00

There's growing evidence that the dinosaurs and most their contemporaries were not wiped out by the famed Chicxulub meteor impact, according to a paleontologist who says multiple meteor impacts, massive volcanism in India, and climate changes culminated in the end of the Cretaceous Period. The Chicxulub impact may, in fact, have been the lesser and earlier of a series of meteors and volcanic eruptions that pounded life on Earth for more than 500,000 years, say Princeton University...

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2006-03-09 09:00:52

University scientists suggest extraterrestrial theories are flawed and that more down to earth factors could have accounted for past mass extinctions Leicester -- Earth history has been punctuated by several mass extinctions rapidly wiping out nearly all life forms on our planet. What causes these catastrophic events? Are they really due to meteorite impacts? Current research suggests that the cause may come from within our own planet "“ the eruption of vast amounts of lava that brings...

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2005-12-26 08:35:00

So you thought nothing ever happens on the moon? NASA scientists have observed an explosion on the moon. The blast, equal in energy to about 70 kg of TNT, occurred near the edge of Mare Imbrium (the Sea of Rains) on Nov. 7, 2005, when a 12-centimeter-wide meteoroid slammed into the ground traveling 27 km/s. "What a surprise," says Marshall Space Flight Center (MSFC) researcher Rob Suggs, who recorded the impact's flash. He and colleague Wes Swift were testing a new telescope and video camera...


Latest Impact event Reference Libraries

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2004-10-19 04:45:41

Crater -- A crater is a circular depression on the surface of a planet, moon, asteroid, or other celestial body. Craters are typically caused by meteorite impacts, although some are caused by volcanic activity. In the center of craters on Earth a crater lake often accumulates, and in craters formed by meteorites a central island (caused by rebounding crustal rock after the impact) is usually a prominent feature in the lake. Ancient craters whose relief has disappeared leaving only a...

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2004-10-19 04:45:40

Near-Earth Asteroid -- Near-Earth asteroids (NEAs) are asteroids whose orbit intersects Earth's orbit and which may therefore pose a collision danger, as well as being most easily accessible for spacecraft from Earth. In fact, some near-Earth asteroids can be reached with much less ΔV than the Moon. The most famous near-Earth asteroid is 433 Eros that was visited by NASA's Near Earth Asteroid Rendezvous probe. A few hundred such near-Earth asteroids are known, ranging in size up...

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