Comet Dust: Fire and Ice.

NASA scientists "fire and ice" in samples brought back by the Stardust mission.

"Remarkably enough, we have found fire and ice," said Don Brownlee, a University of Washington astronomer who is the mission's principal scientist.

"We have found samples in the coldest part of the solar system. We found samples that have formed at an extremely high temperatures. So the hottest samples that formed at an extremely cold place."

http://www.cnn.com/2006/TECH/space/03/13/stardust.results.ap/index.html