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Distant planets

NASA handout image of an artist's concept illustrating an icy planet-forming disk around a young star called TW Hydrae, located about 175 light-years away in the Hydra, or Sea Serpent, constellation. Astronomers using the Herschel Space Observatory detected copious amounts of cool water vapor, illustrated in blue, emanating from the star's planet-forming disk of dust and gas. The water vapor, which probably comes from icy grains in the disk, is located in the frigid outer regions of the star system, where comets will take shape. REUTERS/NASA/JPL-Caltech/Handout

Dazzling distant galaxies

An artistic sampling of some far-away worlds.