In the cold, dark outskirts of planetary systems far beyond the reach of the known planets, mysterious gas giants and ...

Scientists are intrigued after spotting a highly unusual celestial object lurking at the very edge of our solar system.

The chance of a planet forming in the outer reaches of the solar system - a hypothetical Planet Nine - could be as high as 40 ...

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

Could Proxima Centauri be reached sooner than we thought?

But what is the science behind extraterrestrial life? Is it possible that humans will ever experience "first contact" with an ...

Following the much-ballyhooed “planet parade” this winter, the planets have been gradually dipping below the horizon, ...

Looking for the best educational YouTube channels for kids? Discover top picks that turn screen time into meaningful learning from maths and science to languages and culture.

Today, it’s believed that Jupiter and Saturn, the largest planets, were the first to fully form, both within a few million ...

For years, astronomers have been searching for a ninth planet in our solar system (after giving Pluto the old heave-ho and demoting it to a dwarf planet) and now researchers say they’ve found a ...

Some experts remain unconvinced about this discovery. It’s been almost two decades since our solar system lost its 9th planet. Pluto was officially reclassified from a planet to a dwarf planet ...

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 ...