NASA probe discovers new planet orbiting two stars

NASA probe discovers new planet orbiting two stars
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Highlights

NASA\'s Kepler mission has discovered a new planet orbiting two stars and located within its host stars\' \"habitable zone\", the area around the stars in which life could potentially exist. The planet, known as Kepler-453b, is the 10th such \"circumbinary\" planet discovered by the Kepler mission. The planet\'s radius is 6.2 times that of Earth, or about 60 per cent larger than Neptune, the astronomers calculated.

Washington: NASA's Kepler mission has discovered a new planet orbiting two stars and located within its host stars' "habitable zone", the area around the stars in which life could potentially exist. The planet, known as Kepler-453b, is the 10th such "circumbinary" planet discovered by the Kepler mission. The planet's radius is 6.2 times that of Earth, or about 60 per cent larger than Neptune, the astronomers calculated.


Its size indicates it is a gas giant, rather than a rocky planet, and thus unable to have life despite being in the habitable zone, they noted. Any inhabitants of the system would see two suns in the sky -- much like the view from the planet Tatooine in the movie "Star Wars" -- orbiting each other every 27 days.


The larger star is about 94 per cent the size of our sun, the smaller star only 20 percent the size of our sun and much cooler, emitting less than one percent of the larger star's energy. Kepler-453b takes 240 days to orbit its host stars. The first two-star system was discovered by the Kepler mission in 2011.

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