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 ...

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

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

A 9th planet in our solar system might be found — and no, it’s not Pluto - Is there another planet out there? Researchers say ...

Scientists think they’ve detected a new planet beyond Neptune. Find out why experts believe 'Planet X' might support alien ...

Here’s a little spoiler for next month’s Cosmic Calendar: early May will see the return of the Eta Aquarid meteor shower. The ...

The Solar System is very tidy ... produces a little increase in light as the gravity of the planet magnifies the star behind.

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