when is andromeda going to collide with the milky way
Andromeda–Milky Way collision Excluding planetary engineering, by the time the two galaxies collide the surface of the Earth will have already become far too hot for liquid water to exist, ending all terrestrial life; that is currently estimated to occur in about 3.75 billion years due to gradually increasing luminosity of the Sun (it will have risen by 35â€“40% above the current luminosity).[13][14]
Fist of the Blue Sky On October 24, 2017, it was announced that
Marcus Álvarez
Galaxy In 1922, the Estonian astronomer Ernst Öpik gave a distance determination that supported the theory that the Andromeda Nebula is indeed a distant extra-galactic object.[43] Using the new 100 inch Mt. Wilson telescope, Edwin Hubble was able to resolve the outer parts of some spiral nebulae as collections of individual stars and identified some Cepheid variables, thus allowing him to estimate the distance to the nebulae: they were far too distant to be part of the Milky Way.[44] In 1936 Hubble produced a classification of galactic morphology that is used to this day.[45]