Space/Science — HabitableZone

Space/Science » in reply to re: Bill Hartmann (Scientist, textbook/fiction Author, & Painter)

re: Bill Hartmann (Scientist, textbook/fiction Author, & Painter)

Bill Hartmann is a real nice guy. He attended the TMS convention in Eugene and I had the opportunity to chat with him a little as he signed books.

I imagine the atmosphere would act as a filter for smaller rocks.

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