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The Messier objects are a set of 110 astronomical objects catalogued by the French astronomer ... Messier number NGC/IC number ... Milky Way star cloud ~10 ...
Messier 15 is one of the most densely packed globulars known in the Milky Way galaxy. Its core has undergone a contraction known as "core collapse" and it has a central density cusp with an enormous number of stars surrounding what may be a central black hole. [12]
The Milky Way [c] is the galaxy that ... [82] speculated (correctly) that the Milky Way might be a rotating body of a huge number of stars, ... (Messier object 31).
The Orion Nebula (also known as Messier 42, M42, or NGC 1976) is a diffuse nebula situated in the Milky Way, being south of Orion's Belt in the constellation of Orion, and is known as the middle "star" in the "sword" of Orion.
The Andromeda Galaxy is a barred spiral galaxy and is the nearest major galaxy to the Milky Way.It was originally named the Andromeda Nebula and is cataloged as Messier 31, M31, and NGC 224.
The Milky Way started out small and grew in size as it merged with other galaxies, gaining stars as well as hydrogen to form more stars. Each galaxy has hydrogen gas that aids in the birth of stars.
Messier 3 is quite isolated as it is 31.6 kly (9.7 kpc) above the Galactic plane and roughly 38.8 kly (11.9 kpc) from the center of the Milky Way. It contains 274 known variable stars, by far the most found in any globular cluster. These include 133 RR Lyrae variables, of which about a third display the Blazhko effect of long-period modulation.
The first image of the black hole at the center of the Milky Way galaxy, named Sagittarius A*, has been captured by NASA's Event Horizon Telescope.