New evidence that there could be life somewhere other than Earth. NASA has announced the discovery of a solar system just 40 light years away that has seven Earth-like planets that could be capable of supporting life.

Those seven planets, which revolve around the star Trappist-1, appear to be rocky, not gaseous. And the Hubble telescope will be able to detect the existence of chemical signals of life, such as oxygen or methane.

Five of the seven planets are roughly the size of Earth, and three of them are within the proper radius from their star to support oceans.

Researchers believe we'll know for sure about signs of life on any of these planets within a decade. (USA Today)