After a decade-long search, some scientists say a growing number of clues point to the existence of a hidden planet in the Kuiper Belt beyond Neptune — and they may soon have the opportunity to find ...

With 8 planets now known, the thoughts of astronomers ... than any of the planets in the outer solar system. Nevertheless, because it orbited the Sun like a planet, it was classified as a planet ...

In 1781, German-born British astronomer William Herschel made Uranus the first planet discovered with the aid of a telescope.

The eight planets are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. Mercury is closest to the Sun. Neptune is the farthest. Jupiter: This planet has a faint ring system composed ...

Exoplanets can be quite different from Earth, but occasionally researchers find one that gives a sneak peak into what the ...

We're showing that, everywhere we look now, there was some sort of magnetic field that was responsible for bringing mass to ...

"We have no way to determine how different exoplanets really look in detail yet, and this makes them a rich space for creativity." As shocking as it sounds today, prior to the 1990s, scientists ...

Tiny grains from a distant asteroid are revealing clues to the magnetic forces that shaped the far reaches of the solar ...

Our solar system used to have nine planets ... “In terms of scientific viability, we know that there are eight planets already, so it’s not so crazy to have another planet within the same ...

It is big enough to fit 63 Earths inside it. Among the solar system's eight planets, only Jupiter and Saturn are larger. Its unusual tilt makes Uranus appear to orbit the sun like a rolling ball.