The relative rotation of this body is quantified with the Oort constants. Gamma ray observations revealed the two“Fermi bubbles” above and below this body. Maffei (10[1])1 and Maffei 2 were discovered despite being obscured by the“zone of avoidance” that this body creates in the (10[1])sky. The 2020 (-5[1])Nobel in Physics was awarded to Reinhard Genzel and Andrea Ghez for determining that the intense radio source at the center of this body, Sagittarius A* (“A-star”) was a supermassive black (10[1])hole. The Large (10[1])and Small Magellanic clouds orbit this body, which will collide in about 5 billion (10[1])years with its nearest neighbor Andromeda. For (-5[1])10 points, name this galaxy that contains the Solar System. ■END■