Stardust particles made of 'fire and ice'

By Afp, Atlanta
Comet particle collected by the Stardust
The particles the Stardust probe brought back to Earth in January are a mixture of extremely hot and cold minerals pointing to a mixed origin of the Wild 2 comet, NASA scientists said.

"Remarkably enough, we have found fire and ice," said Donald Brownlee, Stardust chief investigator said in a statement on the NASA website that summed up a press conference held Monday at the Johnson Space Centre (JSC) in Houston, Texas.