The first aliens could be little red plants, not little green men.
Determining the color of an alien world from light-years away isn't easy, but the Hubble Space Telescope has managed to do it.
Gliese 667 has three stars and three potentially habitable worlds. Our solar system has just been trumped.
A group calling itself Lone Signal plans to use old school space program technology to send messages from people around the world into space.
One of the most prolific tools in the search for potential life beyond Earth is in critical condition.
NASA's Kepler Mission has already discovered over 100 planets, some of them habitable. But how exactly does it work?
NASA’s Kepler mission has discovered two new potentially habitable planets in a solar system a lot like ours.
A new list of Earth-like exoplanets has been announced, and we're bringing you the top nine.
The SETI Institute pointed a big radio telescope at some recently discovered exoplanets in habitable zones, looking for telltale signs of alien life.
After an update to atmospheric absorption parameters tweaks the habitable zone around stars, Earth turns out to be a lot less habitable than it seems.