Summary:
- This article discusses an exoplanet, a planet that orbits a star outside our solar system, called WASP-121b. This exoplanet is a "hot Jupiter," a gas giant planet that orbits very close to its host star.
- As WASP-121b travels around its star, the planet's atmosphere is being stripped away by the intense stellar radiation, creating a comet-like tail behind the planet.
- Observations of this exoplanet's changing atmosphere provide valuable insights into how planets can evolve and change over time, especially when they are exposed to extreme conditions like intense stellar radiation.