![]() ![]() The Space Telescope Imaging Spectrograph (STIS) can provide additional data about extended objects, like galaxies, as a two-dimensional spectrum. The Cosmic Origins Spectrograph (COS) breaks ultraviolet light into components that can be studied in detail as a one-dimensional spectrum to learn about a celestial object’s temperature, chemical composition, density, and motion. The observatory also has two instruments that produce ultraviolet spectra – one of Hubble’s most unique capabilities since these instruments will not be complemented or surpassed by any mission in the near future. Astronomers and citizen scientists who use specialized imaging processing software can also manipulate the raw data, assigning their own colors to elements to further study an object’s composition. Once these data are sent to Earth, science visuals developers assign primary colors and reconstruct the data into a picture our eyes can clearly identify. Hubble’s Wide Field Camera 3 (WFC3), which delivers some of the observatory’s spectacular images, directs light to its ultraviolet-visible light channel, which breaks down the light with filters into specific colors that are present. Currently, only Hubble’s instruments are capable of making these observations. ![]() In space, ultraviolet light is most often emitted by the energetic processes of young stars. Space telescopes, like Hubble, placed above our atmosphere can observe these wavelengths.Įarth’s atmosphere absorbs most wavelengths of light – including ultraviolet light – which is why telescopes must be positioned above its atmosphere to capture it. How Do We Capture Ultraviolet Light? Light and the Atmosphere | Most wavelengths of light never reach the ground – they are absorbed by Earth’s atmosphere. With ultraviolet light observations, researchers can determine which galaxies are forming stars and where the stars are forming within those galaxies. Unravel more about the interacting galaxies Hubble Ultra Deep Field | Ultraviolet observations added many new and much younger galaxies to this long exposure, which includes visible and near-infrared light. At some point in the past, this galaxy may have collided and merged with another galaxy, which sparked star formation. Four Successful Women Behind the Hubble Space Telescope's AchievementsĬentaurus A | Ultraviolet light highlights young stars, shown in white, in this image of Centaurus A.Characterizing Planets Around Other Stars.Measuring the Universe's Expansion Rate. ![]()
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