Need a reminder of what's up in the farthest frontier of 'Star Trek' before 'Starfleet Academy'? Class is now in session.

For decades, scientists have tried to turn the question of alien life from late-night speculation into something you can ...

NASA is weeks away from its historic Artemis II mission, marking the first crewed journey toward the moon in over 50 years.

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