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bison

K Stars Liklier to Host Habitable Planets

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bison

Orange K stars are midway in temperature and mass between our Sun and red dwarfs. They may play host to higher numbers of habitable planets than do red dwarfs. With wider habitable zones, which are farther from the star than in the case of red dwarfs, there are better odds of planets existing in this space.

There are the added advantages that K stars are more numerous than Sun-like stars, and that they are longer-lived, allowing life more chances to develop. They are less likely to be unstable flare stars than are red dwarfs, too, an added plus for habitability.

Existing farther from the their star than habitable zone planets of red dwarfs, K star planets are less likely to be tidally locked, always presenting the same side star-ward. Tidally locked planets could have their atmospheres eroded away by stellar winds.

Please see the linked article. below, for further details:

https://www.upi.com/K-stars-more-likely-to-host-habitable-exoplanets/7371552018016/

     

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Habitat

There's something I was unaware of (there are a profusion of such things), I thought our sun was of the most common variety.

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bison

There's a general rule of thumb, that small things are more numerous in the universe than large ones.  Eight planets, a multitude of moons, and a mega-multitude of asteroids, and so forth.  

The  smallest common stars, red dwarfs, make up nearly three quarters of all stars. Larger orange K stars about one seventh of the total, still larger G stars, like our Sun, just under one tenth. 

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