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In this Hubble telescope picture, a curtain of glowing gas is wrapped... News PhotoAstronomy Telescope,Blue,Color Image,Curtain,Glowing,Horizontal,Hubble Space Telescope,Lasso,Man Made,NASA,North,Optical Instrument,Planet - Space,Satellite View,Science and Technology,USAPhotographer Collection: SSPL SSPL/NASAUNITED STATES - JULY 18: In this Hubble telescope picture, a curtain of glowing gas is wrapped around Jupiter's north pole like a lasso. This curtain of light, called an aurora, is produced when high-energy electrons race along the planet's magnetic field and into the upper atmosphere where they excite atmospheric gases, causing them to glow. The aurora resembles the same phenomenon that crowns Earth's polar regions. But this Hubble image, taken in ultraviolet light, also shows the glowing footprints of three of Jupiter's largest moons: Io, Ganymede, and Europa. (Photo by NASA/SSPL/Getty Images)