Season's Greetings from Our Neighbors: The Andromeda Galaxy ("We Wish!")

Season's Greetings from Our Neighbors: The Andromeda Galaxy ("We Wish!")

The Andromeda Galaxy, also known as Messier 31 or M31, is the closest spiral galaxy to our own Milky Way. Located 2.3 million light years away, one can easily find this in the Andromeda constellation with their naked eye on clear moonless nights.

Historically speaking this galaxy is first mentioned by the Persian astronomer Al Sufi in the year 905 A.D. and can be found on star charts dating back before the invention of the telescope. On clear moonless nights away from city lights and with a pair of quality binoculars this object can be traced out to an angular size of 4 degrees. To give you a comparison the full moon has an angular size of just 1/2 a degree.

This image was taken as part of Advanced Observing Program (AOP) program at Kitt Peak Visitor Center.

Credit: KPNO/NOIRLab/NSF/AURA/Adam Block

Release Date: Feb. 19, 2014

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