The Kepler probe's focus is on finding another habitable planet. — -- NASA says we're on our way to discovering Earth 2.0. The Kepler Space Telescope has located a planet and star closely ...

"Are we alone?" This ancient question has occupied humanity's mind for a long time. In 1995, the discovery of the first exoplanet orbiting a sun-like star opened the door to exploring this profound ...

This artist’s concept depicts one possible appearance of the planet Kepler-452b, the first near-Earth-size world to be found in the habitable zone of star that is similar to our sun. . | Credit: NASA ...