Overview

• WASP-39b, a tidally locked exoplanet, shows significant temperature differences between its morning and evening sides.
• The James Webb Space Telescope's sensitivity enabled the detection of these variations, with the evening side being hotter by 300 degrees Fahrenheit.
• Researchers used transmission spectra to analyze the exoplanet's atmosphere, revealing distinct cloud cover patterns.
• High-speed winds circulate around the planet, contributing to the temperature and atmospheric differences.
• The study marks a significant advancement in understanding atmospheric dynamics on exoplanets and sets the stage for future research.