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

A screenshot of James’s animation “Planets and dwarf planets to scale in size, rotation speed & axial tilt in distance order from Sun”. Credit must be given to the creator. Only ...

Astronomers have detected methane in the nearest known T dwarf, offering new insight ... that the carbon abundance in the planet is estimated to be -1.5 dex, while the effective temperature ...

For the better part of a century, we believed there were nine planets in our solar system, with Pluto being the farthest from the sun. Since the discovery of more Pluto-sized dwarf planets ...

A planet circling at a sharp 90-degree angle to the orbits of its two host stars has now been confirmed. This discovery ...

Pluto is undoubtedly the most famous of all the dwarf planets, because it was once considered part of the main lineup of planets in our solar system. But there are… ...

In the 1800s, Ceres was a small planet with big dreams. But that all changed later that century ... this time as a dwarf planet — not quite a planet, but not quite an asteroid, either.

They lie about 250 astronomical units from a third brown dwarf ... “We reviewed all possible scenarios, and the only one consistent with the data is if a planet is on a polar orbit about ...