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03 December 2008
Head-sized Meteorite Found From Canadian Fireball
Several more fragments have been found from the 10-ton asteroid that exploded over western Canada on November 20, including a head-sized piece weighing 13-kilograms (28 lbs). Imagine that landing on your house or car (or head!). University of Calgary professor Alan Hildebrand, who is leading the search estimates there could be 2,000 fragments [...]
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29 November 2008
Pictures of Canadian Meteorite
On Nov. 27, planetary scientist Dr. Alan Hildebrand from the University of Calgary and graduate student Ellen Milley brought reporters to a site where they have found numerous meteorite fragments from the bolide that streaked across the sky in Western Canada on Nov. 20. The area where the meteroite fragments were found is called [...]
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28 November 2008
Fragments of Canadian Fireball Found
Fragments of the big meteorite that lit up the Canadian skies across the provinces of Alberta and Saskatchewan last week have been found, according to a report in CBC online. University of Calgary scientists said they located several meteorite fragments late Thursday afternoon, and they were planning to take reporters to the site Friday. [...]
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26 November 2008
Canadian Meteor Update: 10-Ton Rock Responsible
The search is on for fragments of a 10-ton rock that lit the sky over western Canada last Thursday evening. Scientists estimate that at the time it hit Earth's atmosphere, the asteroid fragment weighed approximately 10 tons and was probably about the size of a desk. It exploded with the force of 300 [...]
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04 October 2008
Meteorites Could Preserve Evidence of Alien Life
In an effort to understand how organic chemicals might survive after a period in the vacuum of space and then violent re-entry through the atmosphere, scientists have uncovered some interesting results. Last year, the ESA/Russian Foton-M3 mission was launched to test the effects of microgravity on various biological samples. However, a sample of Orkney rock [...]
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22 September 2008
Earth's Precious Metals Could Be From Meteorites and Asteroids
Meteorites and asteroids from the inner solar system could be responsible for Earth's store of precious metals such as platinum and iridium, brought to our nascent planet during the period of Late Heavy Bombardment, about 4,000 million years ago. Dr. Gerhard Schmidt from the University of Mainz, Germany, has calculated that about 160 metallic [...]
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11 September 2008
Hunting for Meteorites at the Bottom of the World
Antarctica's distinctive, unforgiving environment is truly unique. But add to that setting the otherworldly task of looking for meteorites — bits and pieces from the far reaches of our solar system that are strewn about Antarctica's icy surface,– and Earth's southern-most continent can provide a truly unparalleled scientific experience. "I had the privilege [...]
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13 August 2008
Solving the Asteroid – Meteorite Puzzle
Astronomers studying ways to deal with incoming near-Earth asteroids (NEA) that might be on a collision course with our planet want to know in detail what these space rocks are made of. The better they "know the enemy" the better they can come up with ways to destroy or change the course of NEAs. [...]
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14 July 2008
Where Do Meteorites Come From?
If you've ever held a real meteorite in your hand, you probably wanted to know, "Where has this rock been in space and where did it come from?" Until now, no one has been able to definitively establish where the majority of meteorites found on Earth came from because of the changes that occur [...]
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19 March 2008
Geologist Finds a Meteorite Crater in Google Earth
Want to discover an impact crater, and even get it named after you? All you've got to do is spend a few (hundred) hours poring over images in Google Earth or Google Maps. That's exactly what Geologist Arthur Hickman did, turning up a previously unknown impact crater when he was searching for iron ore in [...]
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18 March 2008
Peruvian Meteorite May Rewrite Impact Theories
On September 15th of last year, a meteorite impacted the Earth near the town of Carancas in Peru. The story made worldwide headlines when hundreds of people who flocked to see the crater reported getting ill. As it turned out, there were no mysterious space illnesses plaguing the population; the super-hot meteorite likely vaporized arsenic-containing [...]
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13 March 2008
Meteorites Can Be Rich With the Ingredients of Life
How did life arise on Earth? How did we get from rocks and water to the abundance and variety that we see today? Perhaps the raw ingredients for life, amino acids, were delivered to Earth by a steady bombardment of meteorites. Researchers have turned up space rocks with concentrations of amino acids 10x higher than [...]
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25 January 2008
Researchers Observe Extra-galactic Meteor
The common belief is that all meteors come from inside our solar system. Most meteors are thought to be pieces of comet dust or fragments of asteroids that enter Earth’s atmosphere and burn up before they hit the ground, leaving a fiery trail we call “shooting stars.” But a recent observation might put [...]
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19 December 2007
When Solar System Went from Dust to Mountains
Astronomers are slowly piecing together the earliest phases of our Solar System's history. At some point, tiny particles of dust clung together forming larger and larger boulders and eventually even mountain-sized chunks of rock. Researchers from UC Davis have pegged the date that this occurred to 4.568 billion years ago, give or take a few [...]
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29 October 2007
Tunguska Meteoroid's Cousins Found?
It's a cosmic whodunit: a meteorite exploded in the air near a remote part of Russia called Tunguska in 1908, and the meteorite that caused the event all but disappeared. Where did it come from? Was it an asteroid or part of a comet? Astronomers have taken up the case, using mathematical simulations to track [...]
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