Re: Alternative life forms
"We have successfully put a lot of things in the atmosphere and some of it is already in the "junk" status."
Yup and that's all dangerous because
1: It's close in
2: it's moving fast
3: It's all in the same place (more or less) due to orbital mechanics.
Once you move out of the earth's gravity well and stop focussing on a particular blue-green rock there's a lot more..... space..... to play with.