Friday, December 15, 2006

I Thought Hot Particles Were Non-Migratory


This is interesting and not surprising.

Detailed observations from the first comet samples returned to Earth are debunking some of science's long-held beliefs on how the icy, celestial bodies form.


And how do they think they formed now?

Hot particles from the inner solar system migrated out to the cold, outer fringes beyond Pluto where they intermingled and congealed to form a comet.


Just before deciding which path they should take through the solar system.

What does that mean anyway? "Hot particles from the inner solar system migrated out to the cold, outer fringes?" Is the solar system made up of different elements in the inner and outer portions? I never knew that. Are they still hot particles when they migrate to the cold, outer fringes - is that the difference? Or do they become cold particles. How and why do they migrate? And what do you mean "migrate?" You mean like geese?

Why can't they just say they don't really know?

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