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 pair of researchers in astrophysics claim the data sheds new light on Jupiter’s role in shaping the early solar system and ...

Jupiter's already the big kahuna of the Solar System, an absolute unit of a planet with a mass 2.5 times greater than all of ...

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

At that pivotal moment, Jupiter's volume was massive—equivalent to over 2,000 Earths—and its magnetic field was about 50 times stronger than now. An illustration of Jupiter with magnetic field ...

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

It is the largest object in the Solar System, but recent studies suggest it was once even twice as large as it is today.

The new moon of May occurs on May 26. Two days later the moon will make a close pass to Jupiter in the evening sky, and the ...

Illustrations by the 17th-century astronomer Cassini (a-c), compared with Jupiter's current Great Red Spot as captured by Eric Sussenbach in 2023. Disclaimer: AAAS and EurekAlert! are not ...

An artist’s conception of the exoplanet K2-33b, a 10 Myr Jupiter-sized planet, transiting in front of its active host star. This system is comparable to those which will be observed by the ...

The weather forecast for Jupiter calls for clouds with a chance of lightning and "mushballs"—a slushy mix of ammonia and water encased in a hard water ice shell that rain down like hail here on ...