... formation theories and large scale structures; the other galaxies in our ‘neighbourhood’; and the technology used to ... what is likely to be seen in the night sky when the Andromeda galaxy collides with ours (about 4.5 billion years from now). A more ...
... it measures almost 400 light years across. The frequently exploding star is a white dwarf located in the nearby Andromeda galaxy named M31N 2008-12a. White dwarfs are what stars like the Sun become after they...