M33 | Triangulum galaxy, is a face-on spiral galaxy, 50,000 ly in diameter, 3rd largest in the Local Group of galaxies after Andromeda (M31) and the Milky Way. It is about 3 million ly from the Milky Way. Mt. Lemmon SkyCenter
Messier 33 is the 2nd-closest spiral galaxy | EarthSky 11/24/16 Triangulum galaxy, aka Messier 33. is 2.7 million light-years away, and the third-largest member of our Local Group, after the Milky Way and Andromeda galaxies.Triangulum galaxy - aka M33 - VLT Survey Telescope at European Southern Observatory's Paranal Observatory in Chile.
The Andromeda Galaxy is one of only ten galaxies that can be seen from Earth with the unaided eye. The vast majority of stars that are visible with the unaided eye are located in our galaxy. This places Andromeda in rare company…… Read More
Galaxies Collide ~ Top right is M31, the Andromeda Galaxy, 2.5 million light-years away. Bright yellow star at the center is Mirach, beta star in the constellation Andromeda. Bottom left is M33, the Triangulum Galaxy, is also about 3 million light years away. Although they look far apart, M31 and M33 are engaged in a gravitational struggle. Radio astronomers have found indications of a bridge of neutral hydrogen gas that could connect the two, evidence of a closer encounter in the past…