Large rendering of Galaxy Evolution Explorer Space Telescope in space.

Galaxy Evolution Explorer Telescope

Ultraviolet telescopes must be space telescopes because very little ultraviolet energy gets through Earth's atmosphere. A new telescope, called GALEX (for Galaxy Evolution Explorer) is taking a survey of nearly the entire sky in ultraviolet light. Hot, young stars put out a lot of ultraviolet light, so GALEX will be able to find the places where stars are being born.