Activity for JimDiGrizâ€
| Type | On... | Excerpt | Status | Date |
|---|---|---|---|---|
| Question | — |
Would oxygen pool in sink holes if the upper atmosphere was helium, hydrogen and methane? Imagine a big planet, gravity quite strong, 1.5 times earth. Irregular surface, rocky etc... (though flora and fauna will come into it later). It has a very thick atmosphere, drained off by a twin planet, even bigger, which is now a small gas giant. Is it possible that - the air that is left could ... (more) |
— | over 9 years ago |