Webb detects ammonia and unexpected chill on a distant giant planet

Using the James Webb Space Telescope, astronomers led by the University of Maryland identified water, methane and ammonia in the atmosphere of HATS-6 b, a giant planet 500 light-years from Earth. The planet appears significantly cooler than standard calculations predict, suggesting a more complex relationship with its star.

• JWST found water, methane and ammonia in HATS-6 b's atmosphere
• The giant planet lies 500 light-years from Earth
• HATS-6 b is cooler than standard models predict