Spaceflight Insider

News Archive / Tagged: moons

  • Study makes case for geophysical planet definition

    Laurel KornfeldJanuary 16th, 2022

    In an in-depth study of planet classification from the time of Galileo to the present, a group of planetary scientists criticize the 2006 International Astronomical Union planet definition as being rooted in folklore and astrology and argue for a geophysical definition that includes spherical moons as secondary or satellite planets.

  • Dust and ice from Saturn’s rings are falling on nearby moons

    Laurel KornfeldApril 1st, 2019

    Particles of dust and ice from Saturn's rings are falling onto five of the giant planet's tiny moons, all of which are located close to and even within the ring system.