A new study reanalyzing 14 years of Hubble data weakens evidence for water vapor plumes on Europa, though scientists say the ...

The largest moon in the solar system — Jupiter’s Ganymede — has a unique and inexplicable magnetic field. New research could ...

Ganymede and Europa transit Jupiter tonight, while Io disappears in an occultation. West Coast observers can catch a double ...

As July begins, three planets adorn the early evening sky, while more solar system worlds are visible before dawn.

Galileo’s warning about scientific consensus still resonates centuries later as modern discoveries continue overturning ...

See dazzling planets, the Milky Way and a trio of celestial animals brightening the spring sky around May's new moon.

The extended mission will continue until the spacecraft dies. Though Juno will eventually fall toward Jupiter as its trajectory degrades, NASA says it poses no risk of crashing into or contaminating ...

A half century after NASA's Apollo 17 lunar module lifted off the Moon's northeastern near side quadrant, planetary scientists still don't completely understand when or how our Moon first formed. They ...

NASA over the weekend released thousands more photos from last month’s Artemis II mission around the moon. Subscribe to read this story ad-free Get unlimited access to ad-free articles and exclusive ...

A rare blue moon will light up the sky in May as part of a month that will feature two full moons. The inspiration for everything from the classic song “Blue Moon” to the nickname of an All-Star ...

May will play host to one of the most interesting lunar events of 2026, beginning Friday night: two full moons. The rare pair will bookend the month, with the first full moon arriving Friday, the ...