2007-01-07 20:33:18 · 3 answers · asked by David D 2 in Science & Mathematics ➔ Astronomy & Space
Hydrogen is the most common element of the Jovian planets.
I think iron or silicon is the most prevalent of the rocky planets.
2007-01-07 21:18:58 · answer #1 · answered by Voodoid 7 · 0⤊ 0⤋
Thin. The Gaseous Giant class of planet is made up of mostly gas and can be argued to be mostly atmosphere with a dense core at the center. Might be rocky, might be hydrogen gas compressed into its metallic form by the tremendous pressure. Terrestrial planets have thin atmospheres. If you take the average classroom sized globe of the Earth and lay a sheet of notebook paper on it...the paper would be a close approximation of the scale thickness of our atmosphere.
2016-05-23 09:15:05 · answer #2 · answered by Anonymous · 0⤊ 0⤋
Helium?
2007-01-07 20:52:26 · answer #3 · answered by dealerschool2006 3 · 0⤊ 0⤋