[cnn-photo-caption image=http://i.cdn.turner.com/cnn/2010/US/04/22/earth.day.at.40/story.earthrise.nasa.jpg caption="There's a good chance we don't want aliens to come calling, Hawking says." width=300 height=169]
So, the world's most famous astrophysicist has some advice about whether we should or shouldn't try to make contact with creatures from outer space:
Don't do it, Stephen Hawking advises.
It would be much better for humans to keep a low profile, he says. There's a good chance we don't want aliens to come calling, Hawking says, because they very likely wouldn't be the cuddly, ET types we hope for.
Anderson Cooper goes beyond the headlines to tell stories from many points of view, so you can make up your own mind about the news. Tune in weeknights at 8 and 10 ET on CNN.
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