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

Discover the order of planets in the solar system. From Mercury to Neptune, explore our solar system and learn more about our cosmic home. The solar system is our cosmic neighborhood, made up of ...

"Consider a hypothetical solar system where all the planets reside within the star's habitable zone, potentially supporting life." Putin Allies in Europe Abruptly Fall Ill Ahead of Moscow Victory ...

Researchers have found a candidate for the hypothetical Planet Nine ... We currently know of more than 5,800 planets beyond the solar system, but we've only found the tiniest fraction of the ...

Discovered in 1930, Pluto was long considered our Solar System's ninth planet, but was unseated in 2006 after the discovery ...

Discovered in 1930, Pluto was long considered our Solar System's ninth planet, but was unseated in 2006 after the discovery ...

Over the past decade or so, astronomers have speculated about the characteristics of rogue planets in the Milky Way galaxy.

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

With a lot of talk about space recently, have you ever wondered which are the hottest planets in the solar system? You'd think the closer you are to the sun, the hotter they must be. Now that's ...

Everyone knows about the Solar System, and the planets that make it up. They’re in space, orbiting the Sun, in an order we all at least used to be able to recite. But it was not always so.

An alternate explanation that fits the evidence is that Vesta was once part of a planet – but which planet that might been ...