Mists of tiny quartz crystals on a giant hot exoplanet

Astronomers have detected silica in exoplanet atmospheres before. But this is the first time they’ve found particles of what appears to be pure quartz. 

Webb Discovers Methane, Carbon Dioxide in Atmosphere of K2-18 b

A new investigation with NASA's James Webb Space Telescope into K2-18 b, an exoplanet 8.6 times as massive as Earth, has revealed the presence of carbon-bearing molecules including methane and carbon dioxide.

NASA's Webb Detects Carbon Dioxide in Exoplanet Atmosphere

This observation of a gas giant planet orbiting a Sun-like star 700 light-years away provides important insights into the composition and formation of the planet.

Hydroxyl Seen for the First Time in an Exoplanet

The molecule hydroxyl (HO) is common on Earth. Now, for the first time, astronomers have conclusively detected it in the atmosphere of an ultra-hot Jupiter, WASP-33b.