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Artwork of a 51 Pegasi B size comparison.

Artwork of a 51 Pegasi B size comparison.

R650/0034

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Credit

LYNETTE COOK / SCIENCE PHOTO LIBRARY LYNETTE COOK / SCIENCE PHOTO LIBRARY

Caption

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). Pegasi B is red, Jupiter has orange and white bands, Earth is blue. 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.

Release details

Model release not required. Property release not required.

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