NASA Image of GaspraHow to Colonize an Asteroid

What is an Asteroid?


 Webster's Dictionary says that an asteroid is "One of the small bodies that revolve about the sun mainly between the orbits of Mars and Jupiter, more accurately called planetoids." But what are they, and where did they come from? To answer this question, we have to look back to the formation of our solar system.

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© 1999, Robert Lyon Richards