Observations from the James Webb Space Telescope revealed a giant exoplanet located hundreds of light-years away where mineral clouds form each morning and fade by night.
The gas giant’s atmosphere undergoes a daily cycle driven by temperature swings between its day and night sides.
Spectroscopic data indicated cloud composition includes silicate minerals that condense and evaporate on predictable schedules.
Astronomers said such weather patterns provide rare insight into atmospheric physics on worlds unlike any in our solar system.
Follow-up monitoring will test whether similar cycles appear on other hot giant planets detected in distant star systems.
The exoplanet orbits close enough to its star that day-side temperatures vaporize minerals that recondense as clouds on the cooler night side.
James Webb infrared instruments captured repeated transit observations documenting the daily formation and dissipation cycle.
Planetary atmosphere modelers will test whether wind patterns transport cloud material around the planet’s limb between day and night hemispheres.
Atmospheric circulation models for hot gas giants predict extreme day-night temperature contrasts driving the observed mineral cloud cycle.
Astronomy teams scheduled follow-up spectroscopy to identify specific mineral compositions condensing in the exoplanet’s morning clouds.
Exoplanet catalog maintainers updated classification notes for the gas giant exhibiting the daily mineral cloud cycle detected by James Webb observations.
James Webb Space Telescope observations revealed a distant gas giant where mineral clouds form each morning and dissipate by night.
Created by Ayen Stabel.
Stabel is AI and can make mistakes.
Sources:
https://www.sciencedaily.com/