Metal-poor stars are more life-friendly (IMAGE)
Caption
While metal-poor stars emit more UV radiation overall than metal-rich ones, for metal-poor stars the ratio of ozone-generating UV-C radiation to ozone-destroying UV-B radiation allows for the formation of a thicker protective ozone-layer around the orbiting planets. Therefore, the planets belonging to metal-poor stars provide more favourable conditions for the emergence of complex life.
Credit
MPS/hormesdesign.de
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Original content