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Astronomers may have inadvertently complicated the mystery of how strange "roasting marshmallow" planets form. Using the Gemini South telescope, researchers found that the "hot and puffy" ultra-hot ...

Exoplanets are planets that orbit stars other than the sun and thus exist outside the solar system. The word "exoplanet" ...

How can the metal content of stars influence the formation of Earth-like exoplanets? This is what a recent study published in The Astronomical Journal hopes to address as an international team of ...

(CNN) -- The weather on this piping hot exoplanet is truly out of this world. A massive gas giant orbiting a star about 855 light-years from Earth, WASP-121b may have metal clouds and rain made of ...

"The climate of this planet is extreme and nothing like that of Earth. The planet's dayside is so hot that elements typically thought of as 'metal' are vaporized into the atmosphere." When you ...