Editor's note: This article was updated March 25 at 11:40 a.m. ET to account for the recent discovery of new moons around Saturn and Jupiter. The total number of planetary moons and small-body ...

Saturn has just pulled far ahead in the solar system’s moon race, with a fresh wave of detections pushing its tally to 274 confirmed satellites. The surge, driven by deep imaging and clever data ...

New research suggests the moons of Jupiter and Uranus may hint that our planetary neighborhood once had a third ice giant.

Our solar system has two ice giants, Uranus and Neptune, but there may have been a third. According to a new study published ...