M31 is the Andromeda galaxy.
I believe that would be M31.
I believe that would be M31.
andromeda(m31) Lmc Smc.
The Andromeda galaxy (M31), the Large Magellanic Cloud, the Small Magellanic Cloud.
The Milky Way's main companion galaxy is the Andromeda Galaxy, also known as M31. It is the closest spiral galaxy to the Milky Way and is on a collision course with it, expected to merge in about 4.5 billion years. Additionally, the Milky Way has several smaller companions, including the Large and Small Magellanic Clouds.
Milky Way, M31 (the Andromeda Galaxy), the Triangulum Galaxy, the Large Magellanic Cloud, the Small Magellanic Cloud, ...
No, in fact it is the second-largest galaxy, after M31. Most of the other members of the Local Group are dwarf galaxies.
The Milky Way's most notable companion galaxy is the Andromeda Galaxy, also known as M31. It is the largest galaxy in the Local Group, which includes the Milky Way, Andromeda, and several smaller galaxies. Andromeda is on a collision course with the Milky Way, expected to merge in about 4.5 billion years. Other smaller companions include the Large and Small Magellanic Clouds.
The move around. For example: M31 is moving towards us, and is expected to collide with our galaxy, the Milky Way, in 3 or 4 billion years.
In the context of M31, the "M" stands for "Messier," referring to the Messier catalog of astronomical objects compiled by the French astronomer Charles Messier in the 18th century. The number "31" indicates that it is the 31st object listed in this catalog. M31 specifically refers to the Andromeda Galaxy, which is the nearest spiral galaxy to the Milky Way and one of the brightest galaxies visible from Earth.
The two galaxies that can be seen from Earth without a telescope are the Milky Way, our own galaxy, and the Andromeda Galaxy, which is the closest spiral galaxy to us at about 2.5 million light-years away.
The nearest known is the very small Canis Major Dwarf Galaxy at 25,000 light years, a 'satellite' galaxy that orbits the Milky Way. This was only discovered in 2003, so there may be an unknown small galaxy closer. If you want the closest galaxy that is not a Milky Way satellite, that seems to be NGC 185 at just over 2 million light years, though this is in turn a satellite of the Andromeda Galaxy (M31). Finally, M31 is the nearest galaxy that is anything like the Milky Way, a large spiral with its own satellites. It's about 2.5 million light years away.