Green 'Christmas Comet' Visible In Night Sky
The comet 46P/Wirtanen just made its closest approach to Earth in centuries. No word on the whereabouts of Dasher, Dancer, Prancer, Vixen, Cupid, Donner or Blitzen (and Rudolph).
This month, a comet called 46P/Wirtanen is doing a dramatic fly-by, giving Earth an unusually good view of its greenish glow.
The timing of the comet's apparition — and its seasonally appropriate coloring — have led
