Add Yahoo as a preferred source to see more of our stories on Google. Jupiter is already the biggest planet by far in our solar system, but new research suggests it was somehow once even larger than ...

Jupiter, the largest planet in the solar system, was 2 to 2.5 times bigger in its earlier life, according to new research. Credit: NASA / JPL-Caltech / SwRI / MSSS / Tanya Oleksuik Jupiter, the ...

Understanding Jupiter's early evolution helps illuminate the broader story of how our solar system developed its distinct structure. Jupiter's gravity, often called the "architect" of our solar system ...

Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. A “planet parade” is building in the eastern sky before ...

NASA’s Juno spacecraft has revealed the first measurements of the underground temperatures of Io, showing that Jupiter’s most ...

Scientists discovered a rare planet larger than Jupiter orbiting a distant star once every 180 days. A planet nearly five ...

A giant planet two to four times the mass of Jupiter has been hiding in one of the most studied star systems in astronomy.

Simulations reveal that Jupiter’s rapid growth disrupted the early solar system, creating rings where new planetesimals formed much later than expected. These late-forming bodies match the ages and ...

"These two planets have densities comparable to a nice blob of shaving foam fresh from the can." ...

WD 1856 b is the only confirmed case of a planet that survived the death of a Sun-like star. It’s a Jupiter-size world orbiting a white dwarf—the burned-out remnant of a Sun-like star. Now, a team of ...