Astronomers have calculated that the gas giant Jupiter used to be twice as big as it is now, based on the odd orbits of two ...

Long before it became the giant planet we see today, Jupiter was even bigger and had a much stronger magnetic field, ...

Stunning new Jupiter photos from NASA’s Juno spacecraft reveal storms, cloud bands, and its volcanic moon Io as the mission ...

To better understand Jupiter’s primordial stages, researchers turned to the tiniest of the planet’s 92 known moons. Almathea ...

Understanding Jupiter's early evolution helps illuminate the broader story of how our solar system developed its distinct ...

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