RT @ESA_Rosetta: Greetings! Today [5 Jan] I’m 525 million km from Earth & 392 million km from the Sun… 219 days to perihelion! #LivingWithAComet #67P
RT @ESA_Rosetta: Greetings! Today [5 Jan] I’m 525 million km from Earth & 392 million km from the Sun… 219 days to perihelion! #LivingWithAComet #67P