The relative quantities of volatile gases like methane and ethane can reveal key details about distant Kuiper Belt objects.

A surprising chemical difference between Pluto and Sedna, another dwarf planet in the distant Kuiper ... "Since Gonggong is similar in size to Sedna, we believe methane must have escaped from ...

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, that ...

At a distance of just over four light years, Proxima Centauri is our nearest stellar neighbor and is known to be a very ...

Scientists estimate there are ~1 septillion (1 followed by 24 zeros) planets in the observable universe. This figure is based ...

NASA discovers four sub-Earth exoplanets orbiting Barnard's Star after a century-long search. Find out how this changes the ...

Scientists found a bizarre new planet named Enaiposha, unlike any in our solar system. Learn why it's a mystery and how it’s ...

Out past Neptune are countless small icy and rocky bodies called Trans-Neptunian Objects (TNOs), and many of these have moons ...

The European physics laboratory CERN is planning to build a mega collider by 2070. Critics say the plan could lead to ruin ...

Learn what planet rains molten iron and which planet has two moons like Tatooine in Star Wars.

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