This 2004 photograph made by the European Southern Observatory shows the first known photo of an exoplanet, or a planet beyond our solar system. The red orb at bottom left is a young planet, similar in composition to Jupiter, orbiting a brown dwarf, a dim, failed star that is probably 42 times less massive than the sun. An infrared camera, which reacts to heat rather than light, shot these photos from a distance of some 230 light-years.
Photograph courtesy ESO/European Organization for Asronomical Research in the Southern Hemisphere
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