Dione and its shadow cross Saturn’s disk this evening, while several more of the ringed planet’s moons stand nearby.

Saturn’s small moon Tethys makes another transit across the disk along with its shadow; several other moons are observable as ...

This small martian satellite, the mission target for MMX, is destined to be shredded, changing the Red Planet forever.

Monday, October 26 October’s Full Moon occurs at 12:12 A.M. EDT, shining brightly in both the morning and evening sky. The October Full Moon is also called the Hunter’s Moon, which follows the Full ...

Meteors streak past the stars as the First Quarter Moon shines and Iapetus reaches superior conjunction in the sky this week.

The Southern Fish is home to the bright luminary Fomalhaut, a lovely young star that shines brightly in the evening sky.

The planet Mercury stands 25° east of the Sun. View the solar system’s smallest planet, along with the crescent Moon, in the ...

The Wild Duck Cluster is flying through the nighttime sky, a great object to check out during lengthening autumn evenings.

JAXA launches its Martian Moons eXploration mission from Tanegashima, Rocket Lab returns to New Zealand, and China lines up ...

Two jovian moons cross each other’s paths from our point of view, appearing to merge in the telescope eyepiece.

Saturn’s two-toned moon Iapetus is now passing south of the ringed planet, making this satellite easier than usual to find.

Learn the basics of the celestial coordinate system, like right ascension and declination, for accurate stargazing.