Are we alone?
In this artist's impression, the planetary system around the red dwarf, Gliese 581, is pictured showing what astronomers believe is another as yet unnamed Earth-like planet found outside our solar system, a planet that could have water running on its surface. And it's a lot nearer to us, a mere 20.5 light-years away, in the constellation Libra. Suddenly, the potential for extraterrestrial life seems a lot more real.