5 Important Space Breakthroughs Of 2013

2013 was a big year for out-of-this world breakthroughs. Here's a look at some of of the most fascinating things that happened in outer space.

1. We left the Milky Way

New research suggests Europa, one of Jupiter's moons, ejects geysers from an ocean below the frozen surface, a Hubble news release reported. This finding fed researchers' suspicions that Europa may be one of the top-known candidates for hosting alien life forms. Researchers observed jets of liquid that shoot 500 million miles, although they are not sure if these geysers come from what is believed to be an iced-over ocean or somewhere else.

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