Not exact matches
During a busy first year in
orbit around Saturn, the Cassini spacecraft got its first close - up look at the ringed planet's sixth - largest
moon, Enceladus — and wowed scientists in the process.
Because the icy
moon is not perfectly spherical — and because it goes slightly faster and slower
during different portions of its
orbit around Saturn — the giant planet subtly rocks Enceladus back and forth as it rotates.
Cassini took nearly a half - million images
during its mission, which included more than 13 years in
orbit around Saturn, a tour that repeatedly took the probe by the
moons Titan and Enceladus, two places scientists are eager to send another spacecraft in the search for microbial life.
On December 1, 2009, two astronomers submitted a pre-print suggesting that the planet's extreme axial tilt (an obliquity of 97 degrees) may have resulted from the presence of a large
moon that has since been ejected from
orbit around the ice giant by the pull of another planet
during the orbital migration of the giant planets early in the formation of the Solar System.