Latest Impact event Stories

New Evidence Suggests Comets Carried Life To Earth
2012-03-28 12:49:56

New evidence has come up that supports the idea that comets bombarding Earth billions of years ago carried and deposited the key ingredients for life. Scientists reported at the 243rd National Meeting & Exposition of the American Chemical Society (ACS) that the research is part of a broader scientific effort to understand how amino acids and other ingredients for the first living things appeared on Earth billions of years ago. The team used laboratory "guns" and computer models to...

Engineers Working Towards Laser Deflection Of Asteroids
2012-03-28 10:26:01

Protecting the Earth from an extinction-threatening asteroid has in the past been left up to Hollywood, which has deployed a barrage of special effects box office blockbusters that have kept deadly space rocks from smashing our planet into oblivion. But now, Scottish engineers have come up with a plausible way of dealing with asteroids that doesn´t include Hollywood special effects. Engineers at the University of Strathclyde in Glasgow are developing an innovative technique based on...

Moon's Magnetic Anomalies May Be The Result Of Asteroid Collision
2012-03-09 03:06:00

In the nearly five decades since the first lunar surveys were conducted as part of NASA's Apollo program, scientists have advanced a number of increasingly complex theories to explain the vast swaths of highly magnetic material that had been found in the some parts of the Moon's crust. But now a team of researchers from Harvard, MIT and the Institut de Physique du Globe de Paris, have proposed a surprisingly simple explanation for the unusual findings — the magnetic anomalies are...

Image 1 - Meteorite Shockwaves Cause Martian Dust Avalanches
2011-12-17 05:00:03

Dust avalanches around impact craters on Mars appear to be the result of the shock wave preceding the actual impact, according to a study led by an undergraduate student at the UA When a meteorite careens toward the dusty surface of the Red Planet, it kicks up dust and can cause avalanching even before the rock from outer space hits the ground, a research team led by an undergraduate student at the University of Arizona has discovered. "We expected that some of the streaks of dust that...

Princeton Model Shows Fallout Of Giant Meteorite Strike
2011-10-20 04:50:33

Seeking to better understand the level of death and destruction that would result from a large meteorite striking the Earth, Princeton University researchers have developed a new model that can not only more accurately simulate the seismic fallout of such an impact, but also help reveal new information about the surface and interior of planets based on past collisions. Princeton researchers created the first model to take into account Earth's elliptical shape, surface features and ocean...

Geologists Assess Deep Impacts Of Near-Earth Object Strikes
2011-10-18 08:03:44

Volcanologists from the Universities of Leicester and Durham have forensically reconstructed the impact of a meteorite on Earth and how debris was hurled from the crater to devastate the surrounding region. New research by Mike Branney, of the University of Leicester's Department of Geology, and Richard Brown, University of Durham, shows that some aspects of giant meteorite impacts onto Earth may mimic the behavior of large volcanic eruptions. Meteorite impacts are more common than is...

What Caused Asteroid Scheila’s Outburst?
2011-10-08 05:07:17

A remarkable discovery was made by astronomers on 12 December 2010: an asteroid named Scheila had changed its appearance and looked more like a comet, complete with bright tail. An international team of scientists have used innovative modeling techniques to support the idea that the cause was another object impacting Scheila, ejecting material from the asteroid. The lead scientist of this study, Fernando Moreno of the Instituto de Astrofísica de Andalucía in Granada,...

Image 1 - Comet Found To Contain Ocean-Like Water
2011-10-05 14:10:47

According to a new study published in the journal Nature on Wednesday, the Earth's ocean may have been created by comets. Measurements taken from the Herschel Space Observatory show that comet Hartley 2 contains water with the same chemical signature as Earth's oceans. This comet lies in the Kuiper Belt about 30 to 50 times as far away as the distance between Earth and the sun. "Our results with Herschel suggest that comets could have played a major role in bringing vast amounts of...

Image 1 - Earth Safer Than Previously Thought From Mid-Size Asteroids
2011-09-29 11:57:27

[ Watch the Video ] New asteroid population numbers given by NASA shows that Earth isn't as threatened as previously thought by the space rocks. NASA announced on Thursday that its Wide-field Infrared Survey Explore (WISE) has found that there are significantly less near-Earth asteroids in the mid-size range than previously thought. Astronomers believe there are about 19,500 mid-size near-Earth asteroids, which is over 15,000 less than previously thought. Scientists say this...

Latest Impact event Reference Libraries

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...

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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