A new study based on data from the James Webb Space Telescope suggests that Nereid, the third-largest moon of Neptune, may be ...

The team still can't confidently rule out the existence of Europa's water vapor, especially as similar plumes have been more ...

Neptune has a complicated life story, and its moon Nereid might be the only one left standing from the planet’s ...

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

North America’s celestial highlights for the weekend ahead, which also apply to mid-northern latitudes in the northern ...

Venus and Jupiter are visible in the evening, while there's a conjunction of Mars and Uranus in the predawn sky.

A 67-foot airplane-sized asteroid named 2026 KF will fly close to Earth on May 22, 2026. Scientists are closely tracking the ...

WASP-94A b is a hot, tidally locked gas giant orbiting close to one of the stars in a binary system roughly 690 light-years ...

Neptune’s third-largest moon, Nereid, could be an intact survivor from the planet’s original satellite system, upending ...

On the evening of May 20, skywatchers in the United States will witness a striking celestial display as the waxing crescent ...