“Hot” Rocks Found in Icy Comet

Publication: National Geographic News   Date: March 14, 2006   View Article

Comet Wild 2 has spent most of its life in the most frigid reaches of our solar system. But at the comet, NASA’s Stardust spacecraft has found minerals born of intense heat near the sun or other stars, scientists announced yesterday afternoon.

The surprising finding may alter our understanding of how comets form, they said.

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