Alright, I'm not really a physics major or a scientist, but I do have a basic understanding of physics. In fact, I'm actually a writer and right now I'm trying to research the physics of what this thread is titled as, a metal planet. Problem is since I'm not a physics major or scientist, I sort of have to rely on psuedo-science and so I found this site through google in hopes that some of you could help give me a better understanding of what I'm trying to build. Now, let me go into details about this metal planet... - It's an iron-based planet, made mostly of a bio-organic metal earth/dirt. - It's about the size of Mars, maybe a bit smaller. - There isn't a lot of water besides the steam that rises out of huge valleys in-between continents. (Think of an ocean valley in-between north America and Europe.) - There are also some measurements I put together by looking at graphs of other planets. - There's two small moons. (As for the measurements, they may be a bit sketchy as my math is rusty, lol, so please correct me on any of that.) Okay, on the subject at hand, what I'm wondering is for this metal planet, what kind of atmosphere would it have? What kind of material would life be based off of (humans being carbon based)? Also, what other information would be required to answer these questions? P.S. - This is all hypothetical. Thanks.