Exploring Messier 31: A Stunning Image of the Andromeda Galaxy

Thread starter spark802
Start date Oct 4, 2014

In summary, Messier 31, also known as the Andromeda Galaxy, is a spiral galaxy located approximately 2.5 million light years away from Earth in the constellation of Andromeda. It has a diameter of approximately 220,000 light years, making it the largest galaxy in our Local Group. It can be seen with the naked eye under dark sky conditions and is considered special because it is the closest and largest galaxy in our Local Group, as well as the most distant object visible to the naked eye. It was first discovered by Persian astronomer Abd al-Rahman al-Sufi in 964 AD and later catalogued by French astronomer Charles Messier in 1764.

Oct 4, 2014

spark802

https://flic.kr/p/pseKPy by https://www.flickr.com/people/49843779@N08/, on Flickr

Last edited by a moderator: Oct 6, 2014

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Oct 6, 2014

Greg Bernhardt

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The higher res attachment photo is really nice!

Oct 8, 2014

davenn

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2023 Award

sweet !

Well done :)

Dave

Oct 22, 2014

Drakkith

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Nice!

Oct 27, 2014

Andy Resnick

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clear skies last weekend:

Last edited: Oct 27, 2014

Related to Exploring Messier 31: A Stunning Image of the Andromeda Galaxy

1. What is Messier 31?

Messier 31, also known as the Andromeda Galaxy, is a spiral galaxy located approximately 2.5 million light years away from Earth in the constellation of Andromeda.

2. How large is Messier 31?

Messier 31 has a diameter of approximately 220,000 light years, making it the largest galaxy in our Local Group of galaxies.

3. Can Messier 31 be seen with the naked eye?

Yes, Messier 31 is one of the few galaxies that can be seen with the naked eye under dark sky conditions. It appears as a faint, hazy patch in the night sky.

4. What makes Messier 31 special?

Messier 31 is considered special because it is the closest galaxy to our Milky Way galaxy and is also the largest galaxy in our Local Group. It is also the most distant object that can be seen with the naked eye.

5. How was Messier 31 discovered?

Messier 31 was first discovered by Persian astronomer Abd al-Rahman al-Sufi in 964 AD. It was later catalogued by French astronomer Charles Messier in 1764, who mistook it for a nebula.