In the early days of our solar system, when the Sun was still young and the planets were barely formed, Jupiter wasn’t the ...

Today, it’s believed that Jupiter and Saturn, the largest planets, were the first to fully form, both within a few million ...

Recent calculations suggest that Jupiter, our solar system's largest planet, was once more than double its current size.

As the most massive planet in the Solar System, and first to form, Jupiter’s gravity shaped the formation of everything else.

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

A new study has revealed that Jupiter—our solar system’s largest planet—was once even more enormous than it is today. In fact ...

Many of these celestial orbs are as remarkable as Jupiter itself. The largest moon in the solar system, Ganymede is also the only moon known to have its own magnetic field. Volcanoes rage on Io's ...