In the Media

Astronomers have uncovered phosphine in the atmosphere of Venus, a potential sign of microbial life, reports Seth Borenstein for the AP. Prof. Sara Seager explains that she and her colleagues, “exhaustively went through every possibility and ruled all of them out: volcanoes, lightning strikes, small meteorites falling into the atmosphere. ... Not a single process we looked at could produce phosphine in high enough quantities to explain our team’s findings.”