A 1,100-mile-long ice cloud forms near the martian volcano Arsia Mons every morning. New simulations suggest it’s built by a ...

Even with a bright Moon in the sky, you can easily trace this “waterfall” of stars to its end in the spray of open cluster ...

October’s bright Full Moon offers an excellent observing target, allowing you to trace the rays thrown out by ancient impacts ...

Astronomers have long sought signs of life beyond Earth, with exoplanets like K2-18 b — a world about 124 light-years away — offering tantalizing possibilities. In 2023 and again in April 2025, a team ...

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

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.

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 ...

The Orionid meteor shower peaks this morning — the perfect time to watch for shooting stars, as Earth turns into the ...

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

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

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