Uranus's moons — what is unique about each moon and why do they orbit at a tilt?

The phenomenon of a Full Moon arises when our planet, Earth, is precisely sandwiched between the Sun and the Moon. This ...

See the crescent moon shine with Mars at sunset on Sept. 24. The crescent moon shines close to Mars above the western horizon ...

July will be packed with cosmic activity. Mercury, the fastest-moving planet in our solar system, will make a rare and optimal appearance, providing a chance to spot it near the western horizon.

August got a supermoon. So did September, with a partial lunar eclipse. Can't get enough of the supermoons? Well, October's full moon will be close to Earth again, shining bright as a supermoon. You ...

The provisionally named S/2025 U1 is so small it had gone unnoticed by probes and telescopes for the past 40 years.

On September 19, 2025, witness a stunning conjunction of the crescent Moon, Venus, and Regulus in the predawn sky. Learn why ...

"The profile of the occultation was most consistent with it being a new satellite — a new moon — going around Quaoar." ...

On July 4, there will be an uncommonly good opportunity to get a glimpse of Mercury, the smallest, speediest planet in our solar system. Named after the Roman god known for his winged feet and swift ...

Stargazers in the U.S. will witness the razor-thin waning crescent moon rise close to Venus and the bright star Regulus in the predawn sky on Sept. 19, while others will see the lunar disk pass ...

NASA is urging those who want to participate to enter in their names before a fast-approaching deadline in a project to send a chip with the data to one of Jupiter's moons. The space agency says ...