Tardigrades: Good eatin'?
I wonder how long they can survive in space? My non-scientific guess is a very long time, considering their biology and ability to repair their DNA.
If humans fail to establish colonies on other planets, we could always blast millions of these bugs into space before the sun blows up or we get hit by a big rock.
Before we do this, I think we should add some code to their DNA; a message from their "Gods", the almighty humans! Hehe.