RT @AstroKatie: The gravitational field of Comet 67P is tiny and weird. If you can jump 4cm high on Earth, you can jump off the comet http://t.co/C9KgeggKqN
RT @AstroKatie: The gravitational field of Comet 67P is tiny and weird. If you can jump 4cm high on Earth, you can jump off the comet http://t.co/C9KgeggKqN