Exoplanets like Earth have been discovered but not all Earth-like planets are equal when it comes to alien life.

More planets could be homes for aliens than we thought, scientists say - Planets we thought were not inhabitable might ...

WASHINGTON — An Earth-sized planet in its star's habitable zone has been discovered in data from NASA’s Kepler space telescope. NASA says the newly found exoplanet is the closest to Earth in size and ...

The National Aeronautics and Space Administration (NASA)'s Perseverance Mars rover made an unbelievable discovery on the planet of Mars that doesn't seem to be from that planet. Indeed, a roughly ...