• 1 year ago
Andromeda Galaxy Profile The Andromeda Galaxy (M31) is the closest large galaxy to the Milky Way and is one only ten galaxies that can be seen unaided from the Earth. In approximately 4.5 billion years the Andromeda Galaxy and the Milky Way are expected to collide. It is accompanied by at least 10 satellite galaxies the most notable of which is the Triangulum Galaxy.
The Antennae Galaxies are a pair of distorted colliding spiral galaxies about 70 million light-years away, in the constellation of Corvus (The Crow). This view combines ALMA observations, made in two different wavelength ranges with visible-light observations from the NASA/ESA Hubble Space Telescope.
Infographic: How types of galaxies are identified.