NASA | Exoplanet Atmosphere Blasted by Stellar Flare

The video discusses the star HD 189733 and its giant planet, HD 189733 B, which orbits very close to its star. This proximity causes the planet to experience atmospheric erosion due to powerful flares from the star. Observations using the Hubble Space Telescope and NASA's Swift satellite revealed that these flares can cause significant atmospheric loss, creating a comet-like tail. The process of atmospheric erosion is crucial for understanding the evolution of gas giant planets that orbit close to their stars.

What did astronomers observe about the atmosphere of HD 189733 B in 2011?

What effect does the X-ray flare from the star have on the planet's atmosphere?