[ExI] "Stardust blurs line between asteroids and comets"

[Damien Broderick]

http://www.cosmosmagazine.com/node/1825


Friday, 25 January 2008
Cosmos Online


SYDNEY: A new analysis of comet grains collected by NASA's Stardust 
probe, has surprised experts by revealing that they don't contain 
samples of the most ancient material in the Solar System.

Rather than primordial dust, the samples contain material that has 
been more commonly in asteroids from the inner Solar System.

The find reported today in the U.S. journal Science by cosmochemists 
led by Hope Ishii of the Lawrence Livermore National Laboratory in 
California, blurs the distinction between asteroids and comets.

[etc etc]