Our solar system may have a ninth planet after all, researchers say. The possibility that an additional planet may be ...

If the object really is Planet Nine, it would be larger than Neptune and exist 700 times further from the sun than Earth.

The solar system consists of our star, the sun, and everything bound to it by gravity: the planets Mercury, Venus, Earth, ...

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

In a distant corner of our solar system called the Kuiper Belt, icy bodies lurk in the darkness, orbiting our sun at vast ...

You have four rocky planets near the Sun, and four gas giant planets further away ... indicating that these planets are ...

Pluto was discovered in 1930 in Arizona, but in 2006 scientists decided to cut Pluto from the planetary line up. Here is why ...

Stars have long inspired curiosity among observers, but our understanding of their birth and the creation of planets around ...