Exoplanet atmospheres refer to the gaseous layers that surround planets outside of our solar system, known as exoplanets. These atmospheres play a critical role in determining the climate, composition, and potential habitability of these distant worlds. Scientists study exoplanet atmospheres using a variety of techniques, including spectroscopy, to analyze the absorption and emission of light from these atmospheres. By studying exoplanet atmospheres, researchers can gain valuable insights into the diversity of planetary environments in our galaxy and possibly identify signs of life on other worlds.