There could be a ninth planet in our solar system that's lying in wait to be discovered - and no, it's not Pluto. Our solar ...

a yellow dwarf star that contains 99.8% of the solar system's mass. Everything else — from the eight major planets to dwarf planets, comets, asteroids, and icy objects — revolves around it.

All of our solar system’s planets are lining up to parade through the night sky at once. This extraordinary celestial event ...

If you are a budding astronomer or simply enjoy watching the sky through a telescope, you probably have an interest in all of the planets in our solar system. There are a total of eight planets ...

But that includes exoplanets, alien worlds that orbit alien suns. Only eight planets call our solar system home. Or there might still be nine if some astronomers are correct about an as-yet ...

The planets of the solar system were lined up in the sky Wednesday ... to happen at least every couple of years. In fact, the eight-planet alignment last happened in June. In order to see the ...

The solar system's eight planets will never truly be in a straight line, but they can get close to it. When you purchase through links on our site, we may earn an affiliate commission. Here’s ...

Scientists may have discovered a dwarf planet far beyond Neptune — an unearthing that may disprove a longstanding theory ...

The eight planets in our solar system orbit the sun in roughly the same plane because they all originally formed from the same disc of debris around the sun. The line the sun traces across the ...

But you might be surprised to know that the search for a new planets in our own solar system is ongoing. In fact, researchers have spent decades combing the night sky for evidence of other planets at ...

The eight planets in our solar system orbit the sun in roughly the same plane, because they all originally formed from the same disc of debris around the sun. The line the sun traces across the ...