As the Philae lander of Rosetta space probe is scheduled for a historic landing on comet 67P/Churyumov–Gerasimenko tomorrow, let us go on a history lesson to see what other extraterrestrial bodies humankind has managed to land space probes on.
Now if only we could get people to clean up our own planet before we mess up stuff on other celestial bodies, I'd be sooooooo happy