Researchers say they believe one of NASA’s space telescopes has tracked an asteroid smash-up before and after the collision for the first time.
The Spitzer Space Telescope, which was launched in 2003, spotted an eruption of dust around a young star — the probable result of a collision between large asteroids.
“We think two big asteroids crashed into each other, creating a huge cloud of grains the size of very fine sand, which are now smashing themselves into smithereens and slowly leaking away from the star," said lead author Huan Meng of the University of Arizona, Tucson, in an article published Friday online in the journal Science.
While Spitzer has observed suspected asteroid smash-ups before, this marks the first time scientists have been able to collect data before and after a planetary collision. The data will help researchers understand how rocky planets, like Earth, are created.
Rocky planets start life off as dusty materi...
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