RT @NewHorizons2015: How big does Charon appear in Pluto’s sky? Pluto in Charon’s? BEHOLD! Thanks @VeronicaBray http://t.co/tMpoAKy8LE
RT @NewHorizons2015: How big does Charon appear in Pluto’s sky? Pluto in Charon’s? BEHOLD! Thanks @VeronicaBray http://t.co/tMpoAKy8LE