1. Has to spin on its axis
2. Has to have liquid (not neccesarily H2O water)
3. Has to have a magnetic field to protect from radiation
4. Has to have geological features (Volcanoes, mountains, valleys ect.)
5 Has to have weather (Tornadoes,Hurricanes,earthquakes,seasons)
6. Has vegatation
7. Has some kind of internal plumbing
8. Size of planet is irrelavent.
Good criteria? Or did I exclude something from this list? And why or why not is this a good list to accurately know what a planet is?
2006-11-16 06:48:33 · 3 answers · asked by Maurice H 6 in Science & Mathematics ➔ Astronomy & Space
Sounds good to me except for #8. Without sufficient mass, the planet would lose it's atmosphere. There sure are a lot of jokers around here, have you noticed.
2006-11-17 08:59:03 · answer #1 · answered by gone 7 · 0⤊ 0⤋
Yah, but can you do it in 6 days.
2006-11-16 14:57:21 · answer #2 · answered by Brite Tiger 6 · 0⤊ 2⤋
Yippee.
I am now enlightened.
Great job, oh master.
2006-11-16 14:51:16 · answer #3 · answered by Anonymous · 0⤊ 2⤋