PARIS: Astronomers announced on Wednesday they have discovered a massive planet orbiting a tiny star, a bizarre pairing that ...

Artist's impression of Planet TOI-6894b, a low-density gas giant orbiting the star (TOI-6894) - the lowest mass star to have ...

A recent study found that Jupiter was once twice the size that it is now, making it big enough to swallow up 2,000 Earths.

There’s a new object in the distant reaches of our solar system, and it might just offer clues to a long-standing cosmic ...

Astronomers find evidence of a possible ninth planet beyond Neptune, reigniting the debate about the formation of the Solar ...

Astronomers spotted water around a young, sun-like star for the first time ever, and it could help us understand solar system formation.

Astronomers have discovered that the Jupiter, the largest planet in our Solar System, was once so big that it could have held ...

The team's calculations indicate that young Jupiter had a radius nearly twice its current size, with a volume large enough to ...

This may explain the strange properties of the orbits of our solar ... warped the orbits of many planets. More NASA, ESA, Caltech / ISTOCK / GETTY IMAGES PLUS "[T]he puzzle for theoretical ...

"[T]he puzzle for theoretical astrophysics ... Because many close-matching simulations had the planet-like object swooping through the inner solar system, the researchers created an additional ...

Play the USA TODAY Daily Crossword Puzzle. Here is everything ... While it's no longer officially a planet, Pluto remains a fascinating and beloved part of our solar system with a slightly less ...

One set of dots had matching colors and brightness. open image in gallery Is there a possible ninth planet in our solar system? Researchers say they may have found a candidate (Credit: ESO/Tom ...