NASA’s Cassini spacecraft has found evidence of material orbiting Rhea, Saturn’s second largest moon. This is the first time rings may have been found around a moon. A broad debris disk and at least ...

Newly released for the holidays, images of Saturn’s second largest moon Rhea obtained by NASA’s Cassini spacecraft show dramatic views of fractures cutting through craters on the moon’s surface, ...

Rhea and Dione seem like dark and light fraternal twins in this Cassini spacecraft image, with each of these two Saturnian moons displaying a large crater oriented similarly in the northern hemisphere ...

On Dec. 23, 1672, Italian astronomer Giovanni Cassini discovered Rhea, Saturn’s second-largest moon. Rhea is made up of rock and ice and is covered in craters. Rhea is also the only moon discovered to ...

Eight distant worlds hold secrets that still puzzle scientists and spark endless curiosity. Each moon offers a strange allure ...

Alfredo has a PhD in Astrophysics and a Master's in Quantum Fields and Fundamental Forces from Imperial College London.View full profile Alfredo has a PhD in Astrophysics and a Master's in Quantum ...

On November 6, the Moon will transition into Taurus, subsequently occulting stars within the Pleiades cluster, visible in regions of Alaska, Asia, and Europe, and passing 5° north of Uranus.

In November 2025, Saturn's iconic rings appeared to vanish due to a rare cosmic alignment, causing astonishment among astronomers and skywatchers worldwide.

On November 13, Titan will undergo an occultation egress from behind Saturn's disk. This phenomenon will begin at 7:26 p.m. EST, occurring in darkness for observers in the eastern U.S. and during ...