Astronomers using the NASA/ESA/CSA James Webb Space Telescope have for the first time identified hydrogen sulfide gas in the atmospheres of three gas-giant exoplanets orbiting HR 8799, a ...

Astronomers have reported one of the longest stellar dimming events ever recorded, with a Sun-like star fading by 97 percent for nearly 200 days. Astronomers believe one of the longest stellar dimming ...

Mira A is in the late stages of its life, a red giant swelling and losing mass as it prepares to fade into a white dwarf. While stars of this type routinely shed material, the sheer scale and symmetry ...

"The most likely explanation for the dimming is a brown dwarf – an object heavier than a planet but lighter than a star – surrounded by a vast and dense ring system." ...

With their marriage under a microscope, the second couple may find solace in the stars. With a little help from astrologically minded friends, Elise Taylor charts the course of their compatibility.