Turn Right! Turn Left!

If you're driving on a two lane highway and a head-on collision seems imminent, you should turn right. This probably doesn't work in England.

Phil Plait of Bad Astronomy tells us that the Andromeda Galaxy is on a collision course with our Milky Way Galaxy [Hold on tight: in 4 billion years, we’re due for a galactic collision!]. What should we do? We don't know whether the Andromedons drive on the right side of the road or the left. Which way should we turn to avoid the collision?




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