Our solar system may have a ninth planet after all, following the declassification of Pluto nearly two decades ago, ...

Astronomers may have found a candidate for Planet Nine. This planet is beyond Neptune. The finding could be the first ...

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

There have been questions about a mysterious ninth planet in our solar system for nearly a decade. Pluto was unseated as ...

The birthplace of stars begins within large, cold clouds of gas and dust, which eventually collapse under the weight of ...

The solar system is our cosmic neighborhood, made up of the sun and everything ... Neptune and then the possible Planet Nine. It's a dynamic system shaped by gravity and time, and while we've ...

Yet none of this kind exist in our solar system. Planet Nine would help ... the plane the planets sit on as they orbit the sun. Planet Nine's gravity would be pulling on these objects over long ...

open image in gallery Is there a possible ninth planet in our solar system? Researchers say they ... orbit about 20 to 30 times farther from the sun than Neptune, taking between 10,000 and 20,000 ...

Let's turn the sun into a telescope. In fact, we don't have to do any work—we just have to be in the right spot.