By: Elizabeth Howell
Published: 02/08/2013 08:06 PM EST on SPACE.com
Intelligent alien life is likely relatively rare throughout our Milky Way gala...
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Admit it: there's been a night when you've looked up into a sky ablaze with stars and wondered whether there is any life beyond planet Earth.
With so many places for life to exist, we may be closer to finding E.T. than ever before. Imagine what we'd glean from that encounter. How much more we'll come to know -- not only about life in the cosmos but also about ourselves.
In a movie it's important to have aliens whose gestures and facial expressions can be "read" by humans. But come on! Are two eyes, four appendages and an upright posture really essential?
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