NASA’s Juno spacecraft has forced planetary scientists to reconsider something they thought was settled: how big Jupiter actually is. New measurements show the solar system’s largest planet is ...

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. To put that into context, those ...

Jupiter’s swirling storms have concealed its true makeup for centuries, but a new model is finally peeling back the clouds. Researchers found the planet likely holds significantly more oxygen than the ...

Between 7 satellite fly-bys and 2 dedicated missions, you'd think our knowledge about Jupiter would be pretty solid, but ...

Jupiter, the largest planet in our Solar System, has just gotten a bit smaller, at least according to the latest data. New ...

Long before it became the giant planet we see today, Jupiter was even bigger and had a much stronger magnetic field, according to a new study that looked back in time to reveal what the world was like ...

“Textbooks will need to be updated,” study co-author Yohai Kaspi, a planetary scientist at the Weizmann Institute of Science in Israel, said in a statement. “The size of Jupiter hasn’t changed, of ...

Gas giants are large planets mostly composed of helium and/or hydrogen. Although these planets have dense cores, they don't ...

As Earth catches up to and passes Jupiter bringing it at its closest, biggest, and brightest in the evening sky. The bright star seen in the eastern evening sky in recent weeks isn't a star, it's a ...

Researchers have observed mysterious “dark ovals,” each roughly the size of the Earth, appearing on the polar regions of Jupiter on the ultraviolet spectrum. The gas giant, whose Great Red Spot has ...