The team's calculations indicate that young Jupiter had a radius nearly twice its current size, with a volume large enough to ...

The study by Konstantin Batygin of Caltech and Fred Adams of the University of Michigan pulls off a rare feat in planetary science. They have reconstructed Jupiter’s physical state at a precise moment ...

Jupiter wasn’t always the planet we know today—it was once twice as big, had a magnetic field 50 times stronger, and its ...