NASA | JPL-Caltech | Spitzer | 2014 Aug 28
NASA's Spitzer Space Telescope has spotted an eruption of dust around a young star, possibly the result of a smashup between large asteroids. This type of collision can eventually lead to the formation of planets.
Scientists had been regularly tracking the star, called NGC 2547-ID8, when it surged with a huge amount of fresh dust between August 2012 and January 2013.
"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 and graduate student Huan Meng of the University of Arizona, Tucson.
While dusty aftermaths of suspected asteroid collisions have been observed by Spitzer before, this is the first time scientists have collected data before and after a planetary system smashup. The viewing offers a glimpse into the violent process of making rocky planets like ours. ...
UA Astronomers Witness Asteroid Smashup
University of Arizona | 2014 Aug 28
Large impacts around a solar-analog star in the era of terrestrial planet formation - Huan Y. A. Meng et al
- Science 345(6200) 1032 (29 Aug 2014) DOI: 10.1126/science.1255153