The Solar System consists of our star, the Sun, and everything bound to it by gravity; the planets Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune, along with dwarf planets like ...

The Solar System consists of our star, the Sun, and everything bound to it by gravity; the planets Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune, along with dwarf planets like ...

A powerful new observatory is the best hope yet for finding the elusive Planet 9, a large planet that some scientists say is hidden in our solar system.

That will allow the observatory to detect anything that changes — like, say, Planet Nine moving across the ... Well, ever since Pluto got demoted, schools today have kids memorizing eight ...

So far, the only evidence has come from some oddities in the orbits of small Pluto-like bodies ... anything that changes — like, say, Planet Nine moving across the sky. "If it's there, we ...

The search for a hidden giant lurking in the far reaches of the Solar System has captivated astronomers for decades. A new ...

Jupiter is the largest planet in the solar system. It's about 11 times wider than Earth with an equatorial diameter of 88,846 ...