Contrary to a popular scientific notion, there was enough mixing in the early solar system to transport material from the sun's sizzling neighborhood and deposit it in icy deep-space comets. It might have been like a gentle eddy in a stream or more like an artillery blast, but evidence from the Stardust mission shows that material from the sun's vicinity traveled to the edge of the solar system, beyond Pluto, as the planets were born.

"Many people imagined that comets formed in total isolation from the rest of the solar system. We have shown that's not true," said Donald Brownlee, the University of Washington astronomer who is principal investigator, or lead scientist, for Stardust.

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Again we find graphic evidence of science's ability to self-correct. No flies on those that were incorrect and no flies on those correcting them. That is how it is supposed to work.

DA Morgan