51 Pegasi B. Artist's comparison of the size of the planet 51 Pegasi B (at lower right) with its star, 51 Pegasi (at upper left), and the planets of J
51 Pegasi B. Artist's comparison of the size of the planet 51 Pegasi B (at lower right) with its star, 51 Pegasi (at upper left), and the planets of Jupiter and Earth (at lower right). 51 Pegasi B is red, Jupiter has orange and white bands, Earth is blue. 51 Pegasus B is 1/10 the diameter of its sun, 1/2 the mass of Jupiter and 159 times more massive than Earth. This planet was discovered in 1995 by Michel Mayor and Didier Queloz of Geneva Observatory, Italy. The star is a Sun-like star some 42 light years from Earth. The planet orbits only 7 million km from the star, equivalent to 1/6th of Mercury's orbit around the Sun. The surface temperature is probably over 1000 Celsius.
Size: 3734px × 4718px
Photo credit: © LYNETTE COOK/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No
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