Space.com Searching for Life on 7 Nearby Alien Worlds: How Scientists Will Do It 22 February 2017 fborgosano Leave a comment Share: The hunt for signs of life on seven exoplanets in the TRAPPIST-1 system, which lies just 39 light-years from Earth, will likely begin just a few years from now. from Space.com bit.ly/2l9JUTK Share: