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Explore Ultraviolet Image, Ultraviolet Light, and more!

The Sun, through a Hα filter, which cuts out almost all the light except for a narrow slice of color emitted by warm hydrogen

Death Star: Eta Carinae, one of the closest stars to Earth is huge and unstable and will likely explode in a supernova in the relatively 'near future' (On an astronomical timeline this could be a million years from now).