Cassini Pinpoints a Propeller in Saturn’s Rings

NASA’s Cassini spacecraft captured these images of a propeller in Saturn’s A ring on Feb. 21, 2017. These are the sharpest images ever taken of a propeller and reveal an unprecedented level of detail. This propeller is nicknamed “Santos-Dumont” after the Brazilian-French aviator who is hailed as the father of aviation in Brazil. The February 2017 imaging…

Moons, Moons Everywhere

Released today, this image shows one of many small (half-mile wide) moons that orbit Saturn within the rings themselves, creating a “propellers” of gravitationally-tugged ring particles on either side of it. The Cassini team has been watching these interesting ring features for some time, and has carefully tracked eleven of the larger ones over the…