What happens to UV and x-ray in the thermosphere?

In the thermosphere, ultraviolet (UV) and X-ray radiation from the Sun is absorbed by the sparse gases present, leading to the ionization of these gases. This absorption process significantly increases the temperature of the thermosphere, which can reach up to 2,500 °C (4,500 °F) or higher. The ionization also contributes to the formation of the ionosphere, which plays a crucial role in radio communication and atmospheric phenomena like the auroras. However, the density of the gases is so low that the heat is not felt as it would be at lower altitudes.