Ultraviolet Astronomy is the study of celestial objects by observing the ultraviolet (UV) light they emit. This type of light has shorter wavelengths than visible light, allowing astronomers to gather information about the temperature, composition, and motion of stars and galaxies. UV observations can reveal details about hot, young stars and the processes occurring in regions like nebulae. Since Earth's atmosphere absorbs most UV radiation, telescopes designed for ultraviolet observations are often placed in space. Notable missions include the Hubble Space Telescope and the GALEX satellite, which have provided valuable insights into the formation and evolution of the universe.