A view of M51 with the GALEX telescope
M51 whose name comes from being the 51st entry in Charles Messier s catalog is considered to be one of the classic examples of a spiral galaxy At a distance of about 30 million light years from Earth it is also one of the brightest spirals in the night sky A composite image of M51 also known as the Whirlpool Galaxy shows the majesty of its structure in a dramatic new way through several of NASA s orbiting observatories X ray data from NASA s Chandra X ray Observatory reveals point like sources purple that are black holes and neutron stars in binary star systems Chandra also detects a diffuse glow of hot gas that permeates the space between the stars Optical data from the Hubble Space Telescope green and infrared emission from the Spitzer Space Telescope red both highlight long lanes in the spiral arms that consist of stars and gas laced with dust A view of M51 with the GALEX telescope shows hot young stars that produce lots of ultraviolet energy blue
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Photo credit: © The Syndicate / Alamy / Afripics
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