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 ...

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

“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 ...

"We have been waiting for 10 years to confirm that our finely tuned operations of the telescope would also allow us to access ...

The SPHEREx telescope will create the most colorful map of the cosmos, while the four satellites of the PUNCH mission track ...

Butch Wilmore and Suni Williams have nearly half a century of combined experience as astronauts. But this is just their third time in space. Ms. Williams was born in Ohio but grew up in Massachusetts.

Urban legends take a cosmic twist as planets are anthropomorphized in this intriguing piece. Each planet exhibits unique, ...

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 ...