Looking up into the night sky, it can be difficult to comprehend the vastness of the space that surrounds the Earth – and the impressive size of the various stellar and planetary bodies on display.

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 ...

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 ...

Gas giant Jupiter is so large it could swallow up over 1,300 Earths and still have some room to spare. If you want that in even more numbers, that would be a diameter at the equator of close to 90,000 ...