In approximately how many years is the collision between the Milky Way and Andromeda predicted to occur?
Answer
4.5 billion years
The inevitable merger between the two largest galaxies in the Local Group, Andromeda and the Milky Way, is a predictable event based on their current approach velocity. Scientific predictions place the initiation of this collision and the beginning of their merger process at roughly 4.5 billion years into the future. This timescale is immense, vastly exceeding human historical measurement, and will result in the formation of a new, larger elliptical galaxy often nicknamed 'Milkomeda'.
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