This panel of images shows the nearly spherical shape of Saturn’s moon Phoebe, as derived from imaging obtained from NASA’s Cassini spacecraft. Each image represents a 90-degree turn.

Saturn's moon, Phoebe, is not an asteroid but a 4.5-billion-year-old primordial body from the solar system's outer reaches, Cassini mission scientists say.

Saturn's moon Phoebe might be a planetesimal—a remnant of the rocky building blocks of the planets in our Solar System. A new study by Julie C. Castillo-Rogez et al. from Cassini spacecraft ...

Saturn has the most moons of any other planet in the solar system. ... Phoebe: Discovered in August 1898 by American astronomer William Pickering. Polydeuces: Discovered on Oct. 21, ...

New images made by the Cassini spacecraft during its fleeting encounter with Saturn’s moon Phoebe show a battered, pockmarked sphere that may be composed primarily of ice-rich material overlaid ...

Saturn’s moon Phoebe seems to be the system’s oddball; it likely didn’t form in place, but was captured after forming much farther out in the solar system. NASA/JPL. One oddball.

Saturn and several of its moons appear in this image snapped by Cassini in 2007. The entire system, save one moon, appears to have water similar to that of Earth, which is unexpected based on our ...

Images snapped by NASA’s Cassini spacecraft show that Saturn’s moon, Phoebe, is not an asteroid but a 4.5-billion-year-old primordial body from the solar system’s outer reaches.

Most of the rings have a prograde orbit, in the same direction as Saturn, but the outermost (the Phoebe ring) is thought to originate from Phoebe, the largest of Saturn's irregular moons—and ...

This panel of images shows the nearly spherical shape of Saturn’s moon Phoebe, as derived from imaging obtained from NASA’s Cassini spacecraft. Each image represents a 90-degree turn.