Cloud microbes’ colours could help us detect life on other planets

Microbes high in Earth’s stratosphere produce pigments to protect them from UV light – so similar molecules could be biosignatures of life elsewhere in the galaxy

​Microbes high in Earth’s stratosphere produce pigments to protect them from UV light – so similar molecules could be biosignatures of life elsewhere in the galaxy Microbes high in Earth’s stratosphere produce pigments to protect them from UV light – so similar molecules could be biosignatures of life elsewhere in the galaxy