RT @elakdawalla: Think about that, folks. There are WAY more round worlds in our solar system beyond Neptune than there are interior to Neptune.
RT @axelk: PDF becomes 4th most popular religion http://t.co/tsQvJwiAdR
RT @BadAstronomer: CHARON! Evidence of activity! Faulting, resurfacing! Only a few craters, so surface=young. http://t.co/tMuEZsa0g9