A UFO whistleblower stood at the steps of Capitol Hill on Tuesday to deliver shocking secrets he claimed have not been released by the US government despite promises to disclose all information on ...

When it comes to the search for life elsewhere in the universe, methane and other chemical compounds are seen as signs of biology because they are often produced by living microbes. However, ...

The Fermi Paradox: Why Haven’t We Found Alien Life in a Vast Universe? Look up at the night sky on a clear evening, and you’re staring at roughly 5,000 stars visible to the naked eye. Now consider ...

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Are we alone in the universe? Consider mysterious "extraterrestrial" radio signals. Unexplained gases on other planets. Things mistaken for UFOs. In the search for alien life, humans have been fooled ...

Hollywood makes initiating alien contact seem much easier than it has proven to be. In E.T. the Extraterrestrial, E.T. got stranded on earth when his alien compadres abandoned their botany mission. In ...

Add Yahoo as a preferred source to see more of our stories on Google. Scientists say tiny exoplanets smaller than Mars simply can't hold an atmosphere long enough for alien life to survive. ©Image ...