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Three Potentially Habitable Planets Surrounding A Nearby Star, Find Scientists

Three Potentially Habitable Planets: Surrounding A Nearby Star, Find Scientists

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Three Potentially Habitable Planets: It’s affirmative, three potentially habitable planets – potentially rocky like Earth — have been spotted around a star detected relatively near our solar system — a potentially habitable planetary system offering astronomers intriguing possibilities in the search for signs of extraterrestrial life.

The planets orbit Gliese 887, a so-called red dwarf star, half the sun’s mass located 11 light years from Earth – right in our backyard in cosmic terms, researchers said on Friday. A light year is the distance light travels in a year, 5.9 trillion miles (9.5 trillion km).

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Hardly twelve other stars are nearer to our solar system.

Two potentially habitable planets have been definitively identified, one orbiting Gliese 887 every nine days and the other every 21 days. One of these two is situated just inside what is called the habitable zone, or Goldilocks zone, around the star – not too hot and not too cold, perhaps able to maintain liquid water on the surface and harbor life.

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A third potentially habitable planet orbiting every 50 days is detected in the habitable zone, but still needs further confirmation.

They are ‘super-Earth’ planets, which means that they are a few times the mass of the Earth and are expected to consist of a solid core like the Earth, as opposed to the big gas giants such as Jupiter and Saturn,” said astronomer Sandra Jeffers of the University of Göttingen in Germany, chief author of the research published this week in the journal Science.

The newly detected planets are the best possibilities of all the known planets in close proximity to the sun to see if they sustain atmospheres and to study these atmospheres in detail,” Sandra Jeffers added, to learn whether their conditions are “amenable to life.”

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This potentially habitable planetary system will represent a key target for study using NASA’s next-generation James Webb Space Telescope, due for a 2021 launch, Sandra Jeffers mentioned.

Red dwarf stars are relatively small and cool. Gliese 887 is exceptionally inactive in terms of energetic outbursts and dark starspots, meaning it could be hospitable to life on the planets in its orbit.

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