SOFIA and „Christmas comet“ Wirtanen

A bright „guest star“ is showing up in the night sky: comet 46P/Wirtanen. The airborne observatory SOFIA observed the comet in the nights from December 13 to 19 with the GREAT (German REceiver for Astronomy at Terahertz frequencies) instrument, built by MPIfR and Cologne University. In parallel, 46P/Wirtanen was observed with the APEX telescope in Chile (Clemens Plank, DLR Science Blog, December 2018, in German language). [more]