Moons Saturn Visibility Volcanoes Atmosphere Storms Formation Great Red Spot Opposition Amalthea Observation Observing Jupiter Juno spacecraft Missions Io Spectral Cloud Activity around Jupiter Oxygen Production Life Beyond Earth Magnetic Field Observation Techniques Jupiter's Moons Brightness in the Sky Orbital Mechanics Observation Details
New research confirms Jupiter was twice its current size and had a magnetic field 50 times stronger 3.8 million years after formation, supporting the core accretion model of planetary growth.