Saturday, September 26, 2015
Comparing the Local Group
Today's Astronomy Picture of the Day shows both Messier 31 and Messier 33, both members of the Local Group (of which the Milky Way is also a card-carrying member). Messier 31 is better known as the Andromeda Galaxy and can be seen (under darker skies than mine, although as few as ten years ago I could still spot it) with the naked eye (and it's a wonderful binocular or relatively low-power/wide field of view telescopic object). Messier 33 is also known as the Triangulum Galaxy, or, probably more popularly, the Pinwheel Galaxy.