Scientists have suggested that ultraviolet radiation in any stellar system can be a factor in triggering biological processes.
In everyday life, ultraviolet radiation does not have a very good reputation, as it can have a negative impact on people’s health. However, a new scientific study shows that ultraviolet light, perhaps, played a decisive role in the emergence of life on Earth. In addition, it could be the key to finding life in the universe, far beyond our planet.
The study was conducted by scientists from the Harvard-Smithsonian Institute of the Center for Astrophysics (CfA) in Cambridge. In this study, it was suggested that red dwarf stars could not emit enough ultraviolet light to trigger biological processes, like those that originated on our planet. For example, certain levels of ultraviolet radiation might be necessary for the formation of ribonucleic acid, the molecule that is necessary for all forms of known life on Earth.
However, stars of another type could well radiate ultraviolet radiation and trigger biological processes on exoplanets.