Other archived data could prove useful, too. Sousa-Silva is currently looking through old infrared telescope observations of Venus, hunting for additional overlooked evidence of phosphine. And Sanjay Limaye of the University of Wisconsin–Madison, who is a co-author of Mogul’s preprint paper, says old data from the Soviet Venera probes—while unlikely to have been sensitive enough to detect phosphine—may contain evidence for atomic phosphorus, which could hint at the presence of molecular phosphine, too. He notes, however, that the whereabouts of much of those data is unknown. Still, Limaye says, “somebody probably has some records.”
Office of Strategic Communication