Purple Biospheres on Red-Dwarf Worlds: Infrared Signatures of Alien Photosynthesis
To the point
Researchers led by Lígia Fonseca Coelho argue that alien life around cool red dwarf stars could use low-energy photosynthesis, producing a purple planet color and an infrared fingerprint like purple bacteria on Earth, which future telescopes could detect, offering a new way to search for life beyond our blue-green world.
