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Why it's so hard to look for evidence of aliens
The Week via Yahoo News· 1 year agoillustration of UFOs Getty Images / KTSDESIGN / SCIENCE PHOTO LIBRARY The perennial question on the existence of aliens has been circulating anew. Some...
How scientists decide if they've actually found signals of alien life
Popular Science via Yahoo News· 11 months agoThe Allen Telescope Array in California, where many small radio dishes listen for ET signals. In...