Hi. I've been thinking, what if we sent an "artificial planet" to space, and leave it there for a couple of million years (stable orbit)? By artificial planet, I mean a sphere with an iron core, things like our planet has, an atmosphere with similar gases to our own, 24 hour day/night cycle (spinning), you know. (EDIT: As in "sphere" and "artificial planet", I do NOT mean a thing as big as our planet. A 3 or 5 meter sphere is what I have on mind.) Do you think that that would be an useful experiment about finding out the beginning of life, or another subject? Please leave a comment. (also, that double subject thing, that was on purpose.)