Tiny moons boost Jupiter to 101 and Saturn to 285
Astronomers report four new moons around Jupiter and 11 around Saturn, bringing totals to 101 and 285 for the planets and lifting the solar system’s known moon count to 442. The tiny satellites (~3 km across) have wide, faint orbits and were discovered with large telescopes (Magellan–Baade, Subaru, CFHT) by teams led by Scott Sheppard, David Tholen, and Edward Ashton.