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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 . Andromeda has a D 25 isophotal diameter of about 46.56 kiloparsecs (152,000 light-years ) [ 8 ] and is approximately 765 kpc (2.5 million light-years ...
The Andromeda–Milky Way collision is a galactic collision predicted to occur in about 4.5 billion years between the two largest galaxies in the Local Group—the Milky Way (which contains the Solar System and Earth) and the Andromeda Galaxy.
The exact number of galaxies in the Local Group is unknown as some are occluded by the Milky Way; however, at least 80 members are known, most of which are dwarf galaxies. The two largest members, the Andromeda and the Milky Way galaxies, are both spiral galaxies with masses of about 10 12 solar masses each.
Scientists say there's a 50/50 chance that our Milky Way galaxy will collide with the Andromeda ... three-body systems (the Milky Way, Andromeda, and either M33 or LMC), and a four-body system ...
The Sun, and thus the Solar System, is located in the Milky Way's galactic habitable zone. [106] [107] ... the Milky Way and the Andromeda Galaxy, ...
The find, announced Wednesday, can help explain how solar systems across the Milky Way galaxy came to be. This one is 100 light-years away in the constellation Coma Berenices. A light-year is 5.8 ...
The Milky Way and Andromeda complete their merger into a giant elliptical galaxy called Milkomeda or Milkdromeda [11] 500 gal The Universe's expansion causes all galaxies beyond the Milky Way's Local Group to disappear beyond the cosmic light horizon, removing them from the observable universe [12] 2000 gal
Satellite of Milky Way (accretion by Milky Way) 10 Reticulum II: 0.102 0.0314 [5] −3.1 [5] 14.4 [5] [NB 1] Local Group: Satellite of Milky Way: 378 ly 11 Segue 2: dSph 0.114 0.035 [12] −2.5 [12] Local Group: Satellite of Milky Way, one of the smallest known galaxies 220 ly 12 Carina II: 0.122 0.0374 [10] −4.5 [10] 13.36 [10] [NB 1] Local ...