The origin of super-Earths and sub-Neptunes has been revealed in a system of four young planets that are dramatically losing ...

In a real-life twist on Star Wars' Tatooine—a harsh desert planet with twin suns and a criminal underbelly—astronomers have found a bizarre new world that orbits two stars at a perfect right angle.

Now, a new Nature study points to an answer by catching four planets at a stage most systems never show us: The awkward, ...

Which way is ‘down’ has a different answer depending on where you are on Earth, in the solar system, in our galaxy and beyond ...

The star system V1298 Tau reveals that many planets begin as large, low-density worlds that slowly shrink and shed their atmospheres, ...

Published in the peer-reviewed The Astrophysical Journal, the research focuses on tidally locked planets, worlds that always ...

Pluto's days, though they drag on a bit at around 153 hours, are nothing compared to its years. Pluto's orbit takes 248 Earth ...

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