Astronomers have found a planet in the habitable zone of a red dwarf star, but its orbit is so elongated that it likely couldn't support life.
Astronomers have found a planet in the habitable zone of a red dwarf star, but its orbit is so elongated that it would have wildly variable temperatures and likely couldn’t support life.
As red dwarf stars are smaller and cooler than our sun, the habitable zone around them, or the area in which liquid water could exist on the surface of an orbiting planet, is also different. Planets orbiting red dwarf stars could have liquid water even if they orbit much closer than the Earth orbits the sun. And having the planet close to the star also makes it easier to detect.
In fact, it has the most eccentric orbit of a planet around a cool star discovered to date. And that has a big effect on surface temperatures there.
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