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Giant Meteor Fireball

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MessagePosté le: 23/02/2008 13:01:11    Sujet du message: Giant Meteor Fireball Répondre en citant

Here is a video to visualise a meteor falling over US.

Arrow BBC News

More about it here Arrow National Geographic

Giant Meteor Fireball Explodes Over Northwest U.S.

A meteor zipped across the U.S. Pacific Northwest sky early Tuesday morning before exploding, possibly littering eastern Oregon with marble- to basketball-size space rocks, an expert says.

Impact sites are yet to be found, according to Richard Pugh, a scientist with the Cascadia Meteorite Laboratory at Portland State University in Oregon.

Pugh is coordinating a search for potential meteorites. He said 40 to 50 eyewitnesses have contacted his lab to report the fireball.

According to the reports, the event happened around 5:30 a.m. PT on Tuesday. The meteor was first spotted over Washington State moving in an east-southeast direction.

"The light was bright enough to wake up people even though the shades were pulled, and then the sonic boom hit, rattling windows and making the dust fly, and the dogs crawled under the bed," Pugh said.

"And following the heavy boom, in a number of cases we have rumbling a few minutes later. This kind of sound effect usually indicates there are rocks on the ground."

Pugh added that descriptions of the explosion suggest the meteor was rocky and likely sprayed debris over several square miles.

Finding Fragments

Preliminary analysis of the reports indicates any surviving rock fragments are located in the prairie outside the town of Pendleton, Oregon, or in the nearby Blue Mountains (see map).

Given the likely small size of any impacting fragments in a rural area, chances of recovery are slim, Pugh noted.

"Our hope is that somebody got a rock through a barn roof out there somewhere," he said.

Kalinoux [/b]
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