Jupiter is already the biggest planet by far in our solar system, but new research suggests it was somehow once even larger than it is now. Twice as large, in fact.

A new study sheds light on what Jupiter, often called the "architect" of the solar system, was like in the beginning. The giant planet has dramatically changed.

Beginning June 9, 2025, Jupiter will enter Cancer and become exalted. Exaltation occurs when a planet is in one of its favored zodiac signs, so Jupiter in Cancer will be notably lucky.

On June 9, Jupiter, our gas giant planet of luck, abundance, games of chance, and inclinations of excess, will set up his roulette wheel in the breast milk founts of Cancer for the first time in ov… ...

Coordinated observations of Jupiter Scientists around the world observe Jupiter regularly with ground-based telescopes, timed to coincide with Juno's closest approach to the planet every six weeks.

Jovian storms can rework the whole chemical makeup of Jupiter's deep atmosphere by picking up ammonia from and dropping it somewhere else.

This new plant is around six times the mass of Jupiter and marks the closest "super Jupiter" exoplanet we have found to our solar system.

People around the world will have a chance this weekend to catch what could be the year’s most stunning view of the largest planet in our solar system. Jupiter on Saturday will shine at its ...

The Webb Space Telescope found a gas giant similar to Jupiter, but six times as massive, orbiting the star Epsilon Indi A. It takes this planet more than a century to complete an orbit.

Jupiter, the largest planet orbiting the sun, used to be much bigger and stronger when the solar system was just beginning to take shape, a pair of astronomers say.