Saturn’s largest moon Titan lies well east of Saturn this morning, while several other, smaller satellites cluster closer to the rings.

Stars are more colorful than you think! Patience will reveal them; head outside tonight to see summer’s multi-hued stars.

Here’s what’s launching from July 28 to August 3: a cutting‑edge Earth‑observation mission joins a crewed flight to the ...

A set of books belonging to Charles Messier have joined the collection of David J. Eicher, offering a rare link to the comet ...

Step out this evening around 8 p.m. local daylight time to spot a close grouping of the thin crescent Moon and Mars.

Today in the history of astronomy, a Prussian photographer captures totality.

Earth’s satellite and the Red Planet offer a picturesque view amid the stars of Virgo for a few hours after sunset tonight.

The young open cluster NGC 6709 soars through the sky tonight, visible in Aquila with binoculars or any telescope.

Comet C/1999 S4 (LINEAR) was discovered by the LINEAR project in September 1999 and exhibited unusual behavior. Observations by the Hubble Space Telescope in July 2000 revealed a significant crustal ...

Pazmino’s Cluster, or Stock 23, is a small open cluster in Camelopardalis that shines as a hidden gem for binoculars and ...

TRACERS launch paves the way for NASA to study magnetic reconnection and how solar activity affects near-Earth space.

Born on July 25, 1920, Chushiro Hayashi graduated from the University of Tokyo with a degree in physics in 1942. After World ...