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Three super Earths orbiting nearby star discovered
Three planets, each with a mass 7 to 8 times that of Earth, have been discovered orbiting a nearby star that is only 54 light-years away, scientists say. All three planets orbit their star at a distance closer than Mercury orbits the Sun, completing their orbits in just five, 15, and 24 days, researchers said. The team discovered the new planets by detecting the wobble of the star HD 7924 as the planets orbited and pulled on the star gravitationally.
Washington: Three planets, each with a mass 7 to 8 times that of Earth, have been discovered orbiting a nearby star that is only 54 light-years away, scientists say. All three planets orbit their star at a distance closer than Mercury orbits the Sun, completing their orbits in just five, 15, and 24 days, researchers said. The team discovered the new planets by detecting the wobble of the star HD 7924 as the planets orbited and pulled on the star gravitationally. The Automated Planet Finder (APF) Telescope at Lick Observatory in California and W M Keck Observatory on Maunakea, Hawaii traced out the planets' orbits over many years using the Doppler technique that has successfully found hundreds of mostly larger planets orbiting nearby stars.
