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 ...

Stepped up to grade 1 company for the first time, Rhea Moon proved up to the challenge as she surged from fifth in the final furlong Dec. 26 at Santa Anita Park to post a victory by a head over ...

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, ...

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 ...

This half-lit view beautifully captures the ponderously old and cratered surface of Saturn’s icy moon Rhea. Rhea is 1,528 kilometers (949 miles) across. The sunlit terrain shown here is on the moon’s ...