The Guardian website, on the 5th of January 2009, has an article about the miscalculation of the size of our galaxy and how it means its collision will its neighbour will happen sooner.
According to their most detailed measurements yet, scientists admitted to having grossly underestimated the mass of the Milky Way, and so the gravitational pull it exerts on our cosmic neighbours, including the giant Andromeda galaxy.
The oversight means that the two galaxies, which are on a cataclysmic collision course, will slam into one another earlier than scientists had previously predicted.
Fortunately the galactic disaster still lies unfathomably far into the future.
Astronomers believe the crunch to end all crunches could happen around the same time our sun is due to burn up the last of its nuclear fuel, within the next 7bn years. It is highly unlikely that planets and stars will collide. Instead the two galaxies will merge to form a new, large galaxy.
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