When Galaxies Collide
Astronomers have used the Hubble Space Telescope to work out when precisely our Milky Way Galaxy will crash into its neighbor, Andromeda. The pair are being pulled together by their mutual gravity and the scientists expect them to begin to merge in about four billion years’ time. A further two billion years on and they will appear as a single entity.
Our Sun’s position will be disturbed but the star and its planets are in little danger of being destroyed. Viewed from Earth, however, the night sky should look fairly spectacular. That is assuming, of course, that a human species is still around billions of years into the future to look upwards.