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Both the Milky Way and Andromeda are about the same size and same age
-- 10 billion years old. At times they've been considered virtual twins so it's hard to tell which of the galaxies will get the worst of the collision, van der Marel said. When the collision is in full swing in 4 billion years, he said the sun will still have another 2 billion years before its expected death. However, by that time it will have grown so large and so hot that Earth might no longer be habitable without super-engineering techniques, he said. While this upcoming cosmic crash is dwarfed by the Big Bang which created the entire universe, van der Marel said this one could be called "the big smashup." ___ Online: Space Science Telescope Institute: http://hubblesite.org/
[Associated
Press;
Copyright 2012 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.
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