Astronomers have been left puzzled by the discovery of an unusually large planet orbiting a remarkably small star, a cosmic ...

Scientists have uncovered surprising new behavior of Jupiter that directly affects Earth in ways we are only beginning to ...

WASHINGTON (Reuters) -Astronomers have spotted a cosmic mismatch that has left them perplexed - a really big planet orbiting a really small star. The star is only about a fifth the mass of the sun.

New research suggests there may be a narrow window of possibility for life to persist on the icy moons of the outer solar ...

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.

New observations from NASA's James Webb Space Telescope have revealed that auroras on Jupiter are hundreds of times brighter ...

As a result of the International Astronomical Union’s 2006 demotion of Pluto from planet to dwarf planet, our solar system ...

A possible new dwarf planet has been discovered at the edge of our solar system, so far-flung that it takes around 25,000 ...

Science teaches us that stars are much larger than planets, but what about large planets that orbit small stars? This is what ...

Jupiter may have once been more than twice its current size, with a magnetic field 50 times stronger, say scientists who ...

The dancing lights observed on Jupiter are hundreds of times brighter than those seen on Earth. That's because the gas giant has something of an advantage: the planet's strong magnetic field is ...