how many orbits did cassini make around saturn
Cassini–Huygens On February 3, 2010, NASA announced another extension for Cassini, lasting 6​1⁄2 years until 2017, ending at the time of summer solstice in Saturn's northern hemisphere (Cassini Solstice Mission). The extension enabled another 155 revolutions around the planet, 54 flybys of Titan and 11 flybys of Enceladus.[23] In 2017, an encounter with Titan changed its orbit in such a way that, at closest approach to Saturn, it was only 3,000 km above the planet's cloudtops, below the inner edge of the D ring. This sequence of "proximal orbits" ended when its final encounter with Titan sent the probe into Saturn's atmosphere to be destroyed.
Rings of Saturn The dense main rings extend from 7,000 km (4,300 mi) to 80,000 km (50,000 mi) away from Saturn's equator, whose radius is 60,300 km (37,500 mi) (see Major subdivisions). With an estimated local thickness of as little as 10 m[18] and as much as 1 km,[19] they are composed of 99.9% pure water ice with a smattering of impurities that may include tholins or silicates.[20] The main rings are primarily composed of particles ranging in size from 1 cm to 10 m.[21]