Breaking space news, the latest updates on rocket launches, skywatching events and more! He called this hypothetical world "Planet X." "In some ways, Pluto's more of a planet than some of the ...

“New Horizons shattered a major paradigm of planetary science,” says Alan Stern, the mission’s principal investigator. “Pluto turns out to have as much complexity as Mars or Earth, so much so that I ...

Breaking news shocked Villanova’s campus last Saturday, March 15. Everyone remembers exactly where they were when they ...

The gas giants outside our solar system are not capable of hosting extraterrestrial life, but do offer clues in a lingering ...

Butch Wilmore and Suni Williams have nearly half a century of combined experience as astronauts. But this is just their third ...

Pluto, discovered in 1930, was once considered the ninth planet in our solar system ... distant Kuiper Belt," the National Aeronautics and Space Administration said. Pluto was discovered in ...

Pictures may enliven us, but other data, such as information about magnetic fields, add a huge amount to our understanding of ...

Defy gravity with out-of-this-world space trivia collected from the National Aeronautics and Space Administration ...

told Space.com. "That was based on some irregular motions, or apparent irregular motions, of [Uranus and Neptune]." He called this hypothetical world "Planet X." "In some ways, Pluto's more of a ...