*3. Minor space bodies—[http://www.wikipedia.org/wiki/Comets comets], [http://www.wikipedia.org/wiki/Meteors meteors], and [http://www.wikipedia.org/wiki/Planetesimals planetesimals]. | *3. Minor space bodies—[http://www.wikipedia.org/wiki/Comets comets], [http://www.wikipedia.org/wiki/Meteors meteors], and [http://www.wikipedia.org/wiki/Planetesimals planetesimals]. |