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 ...

When you buy through links on our articles, Future and its syndication partners may earn a commission. Credit: Chris Vaughan/Starry Night Jupiter will rise opposite the sun this weekend, making the ...

NASA’s Kepler mission has verified 1,284 new planets – the single largest finding of planets to date. “This announcement more than doubles the number of confirmed planets from Kepler,” said Ellen ...

Mike Brown is convinced that beyond Neptune, at the far reaches of our solar system, there's an unseen giant planet. "This is the 5th largest planet in our solar system, lurking out there, waiting to ...

Researchers discovered a huge planet 1,200 light years from Earth with a density comparable to that of cotton candy, scientists said Monday. WASP-193b is an exoplanet, which means it's located outside ...