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

The foundation for what we know about black holes came during the Great War. Imagine the scene: December 1915. Europe and the world are struggling under the dark cloud of World War I. Somewhere on the ...

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 ...

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

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.

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

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

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