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Latest Impact event Stories

NASA/JPL-Caltech/Cornell/ASU
2014-09-16 11:35:51

Katie Brewin/Aeron Haworth, The University of Manchester A tiny fragment of Martian meteorite 1.3 billion years old is helping to make the case for the possibility of life on Mars, say scientists. The finding of a ‘cell-like’ structure, which investigators now know once held water, came about as a result of collaboration between scientists in the UK and Greece. Their findings are published in the latest edition of the journal Astrobiology. While investigating the Martian...

younger dryas impact evidence
2014-09-15 03:30:48

Emily Murphy, University of Chicago Press A new study published in The Journal of Geology provides support for the theory that a cosmic impact event over North America some 13,000 years ago caused a major period of climate change known as the Younger Dryas stadial, or “Big Freeze.” Around 12,800 years ago, a sudden, catastrophic event plunged much of the Earth into a period of cold climatic conditions and drought. This drastic climate change — the Younger Dryas — coincided with...

meteorite impact crater in Nicaragua
2014-09-09 04:23:59

Chuck Bednar for redOrbit.com - Your Universe Online Nicaraguan officials reported Sunday that the impact of a small meteorite had left a nearly 40-foot crater near the airport of the capital city of Managua, but US scientists are casting doubts on those claims. According to an Associated Press (AP) report published Sunday night, Nicaraguan spokeswoman Rosario Murillo explained that a committee formed by the government to study the incident determined the 16-foot deep crater was caused...

asteroid defies gravity
2014-08-14 12:40:33

Whitney Heins, University of Tennessee at Knoxville Researchers at the University of Tennessee at Knoxville (UT) have made a novel discovery that may potentially protect the world from future collisions with asteroids. The team studied near-Earth asteroid 1950 DA and discovered that the body, which rotates so quickly it defies gravity, is held together by cohesive forces, called van der Waals, never before detected on an asteroid. The findings, published in this week’s edition of...

Meteorite violent origins
2014-08-09 05:13:23

April Flowers for redOrbit.com - Your Universe Online Seven years ago, the Bunburra Rockhole Meteorite fell on the Western Australia (WA) side of Nullarbor Plain and was captured on camera. A new study, published in Geochimica and Cosmochimica Acta, indicates that the unique characteristics of the meteorite suggest it originates from a never-before-identified asteroid. The research team — comprised of Curtain University's Associate Professor Fred Jourdan, Professor Phil Bland and Dr....

dinosaur asteroid
2014-07-28 07:52:02

redOrbit Staff & Wire Reports - Your Universe Online Dinosaurs were victims of bad timing, and likely would have survived the asteroid impact that wiped them out had it occurred slightly earlier or later, researchers from Edinburgh University report in a new study. Dr. Steve Brusatte of the university’s School of GeoSciences and his colleagues explained that dinosaurs were at their most vulnerable when the asteroid hit, as a rising sea level and an increase in volcanic activity...

Siberia Yamal Peninsula
2014-07-17 10:01:06

Joshua Garrett for redOrbit.com - Your Universe Online What could cause an 80 meter hole to form somewhere in northern Siberia? A meteorite strike? Aliens? Cthulhu? Researchers all over the world are scratching their heads over this one, as no one seems to have an answer they are 100 percent sure of. Reported by the Siberian Times, this giant hole of unknown depth appeared rather suddenly in the Yamal Peninsula, which is said to translate as “end of the world,” giving the whole...

Study Questions Younger Dryas Event Comet Theories
2014-05-14 07:31:39

April Flowers for redOrbit.com – Your Universe Online Approximately 128,000 years ago, near the end of the last Ice Age, there was a brief episode of glacial conditions called the Younger Dryas event. The Younger Dryas, named for a flower that flourished during this time, lasted about 1,000 years. There has been quite a bit of controversy in the scientific community regarding what might have initiated the event—with a wide range of theories, including one that has the event caused by...

Alberta Crater May Have Been An Ancient Meteorite Impact Site
2014-05-08 10:46:42

Gerard LeBlond for redorbit.com - Your Universe Online Evidence from an ancient ring-like structure discovered in southern Alberta, Canada, suggests it was formed by a meteorite strike. The meteorite was large enough to form a five-mile-wide crater and if a strike of that magnitude occurred today, the resulting explosion would obliterate Calgary. A research team led by Doug Schmitt, a Canada Research Chair in Rock Physics from the University of Alberta, studied the site discovered by a...

Sentinel Telescope May Help Save Us From Earth-Killing Asteroids
2014-04-23 08:04:10

Lawrence LeBlond for redOrbit.com - Your Universe Online Asteroid impacts on Earth – those on the scale of the one that wiped out the dinosaurs 65 million years ago – have been big hits in Hollywood. But in the modern world, are the impacts portrayed in movies like Deep Impact and Armageddon only the stuff of science fiction? The answer is likely no. Scientists continue to warn us of the dangers that lurk in the skies above us and in the past dozen or so years, no less than 26...


Latest Impact event Reference Libraries

6_d482c2be3fde61d7b1ea392b972acdb62
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...

3_8254e27b9fccec1aaab3b9785e39d79f2
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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Word of the Day
negawatt
  • A unit of saved energy.
Coined by Amory Lovins, chairman of the Rocky Mountain Institute as a contraction of negative watt on the model of similar compounds like megawatt.