Sagan's team created the greatest puzzle of all time, which you can only solve if your species understands the basic nature ...

After decades of sending radio signals into space, humanity finally receives a reply—but it's nothing like anyone expected.

Are aliens real? Was Fox Mulder right all along? We examine the prediction markets to gauge if the U.S. government will confirm that aliens exist before January 2029. The prediction market on a U.S.