Have Carl Sagan and astrobiologists been too hard on stellar flares? A new study imagines an alternative scenario where they power photosynthesis around some of our nearest exoplanet neighbors. An artist’s impression of a habitable exoplanet orbiting a red dwarf. Image credit: Sci-News.com / NASA. Stellar flares are brief, enormous outbursts of electromagnetic radiation from stars that can last anything from a few minutes to hours. They occur when...
