Stand-by for Comet Wirtanen… but don’t get too excited

December 16th. The day that the comet that could have been famous will fly by Earth at only 30.4 times the distance of the Moon. Could have been famous? Yes, had things worked out differently, a generation of space fans would have been learning to say “Wirtanen” (it is Vir-tanen) instead of “Churyumov-Gerasimenko” (Chury to [...]