A distant star system with four super-sized gas giants has revealed a surprise. Thanks to JWST’s powerful vision, astronomers detected sulfur in their atmospheres — a chemical clue that they formed ...

Relatedly, astronomers may have just pushed the upper size limit of what counts as a planet.

Gas giants are large planets mostly composed of helium and/or hydrogen. Although these planets have dense cores, they don’t ...

NASA's James Webb Space Telescope (JWST) provides new insights into the formation of massive gas giant exoplanets, challenging previous size limits.

Gas giants are large planets mostly composed of helium and/or hydrogen. Although these planets have dense cores, they don't have hard surfaces. Jupiter and Saturn are the gas giants in our solar ...

Add Yahoo as a preferred source to see more of our stories on Google. A team of young astronomers has captured WISPIT 2b, a baby gas giant still forming around a Sun-like star, offering rare insight ...

With this new survey, astronomers have gained a peek inside a stage of exoplanet system formation they have yet to fully ...

A new gas giant world discovered by citizen scientists using data from NASA's exoplanet-hunting spacecraft TESS is cool, literally and figuratively. This makes TOI-4465 b a rare case of a giant planet ...

A giant planet may be orbiting the nearest Sun-like star to Earth, and the discovery is sparking excitement across the astronomy world. Using the James Webb Space Telescope, researchers have detected ...

Detecting exoplanets is one thing, but imaging them is another thing entirely. Astronomers can detect them by the way they block their star's light and by the way they make their stars wobble, and ...

Many of the most interesting bodies in our Solar System aren’t planets, but the moons that orbit them. They have active volcanoes, hydrocarbon oceans, geysers, and moon-wide oceans buried under icy ...

Aging stars can completely destroy their planets. When a star reaches the end of its life on the main sequence, it goes ...