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habitable exoplanetsPhys Org
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91% Informative
Scientists simulated light output from a K-dwarf star and grew two photosynthetic organisms in those conditions to see how they responded.
K dwarfs are more abundant and have stable luminosities for billions of years longer than sun-like stars.
They're between about 50% and 80% as massive as G-type stars, and more abundant than other types of stars.
K dwarf stars can be considered the "Goldilocks stars" in the search for potentially life-bearing planets.
The cyanobacterium is a survivor that can withstand long periods of dormancy and extreme growing conditions.
The researchers also cultivated it under solar, K-dwarf and dark conditions.
They measured the average integrated density (IntD) of cyanobacteria , an indicator of culture growth.
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