Two ice worlds, Pluto and Europa, are closer to being explored by robotic spacecraft, and could be our best bets for finding extraterrestrial life in our solar system. Both of these ice-covered worlds ...

It’s a sweltering Tuesday in Washington, D.C., the kind of day that stretches the definition of Earth as a “habitable” planet. But on an eighth-floor terrace near the U.S. Capitol building, dozens of ...

Worlds upon worlds await us in the cosmos and we’re finding more all the time. Before 1992, we weren’t even completely certain planets existed outside of our solar system. Now, astronomers are finding ...

NASA is on the lookout for someone to protect the Earth from an alien invasion. The U.S. space agency is currently hiring a planetary protection officer and is offering a salary between $124,406 and ...