To observers from outer space, Earth's vast oceans ... algae and bacteria: A red sun could give them the most favorable ...

Purple reign: The weather conditions created ... The colour of the sky is determined by the scattering of the sun's light rays as they pass through our atmosphere. Shorter wavelengths of blue ...

A recent study suggests that alien life forms might actually be purple ... under a red sun. The study underscores the importance of diversifying the search for life beyond Earth's traditional ...