An avalanche of asteroids
Publiée le 2010-03-26
The spacecraft WISE (Wide-field Infrared Survey Explorer) launched in December 2009 projects since that date an infrared light on the darkest objects in the Solar System, Milky Way and the Universe. Among these brown dwarfs, clouds of dust and asteroids.

Hundreds of them, are discovered every day. They are so dark that they are almost undetectable from the ground. However, their very low temperature makes them very bright in the infrared. After only three months of operation, WISE has already identified a handful of potentially hazardous asteroids that cross Earth's orbit.

Project managers expect a final harvest of a hundred of these near-Earth asteroids by October 2010.

Puce NASA Science News
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