Sulfur Anomaly: B[e] Supergiant as a Photochemical Reactor
Around a giant star about to explode, astronomers have found an entire production plant for sulfuric acid — on a cosmic scale. Moreover, all the sulfur in the system turned out to be locked up in SO₂ molecules, with its isotopic composition skewed as if a natural photochemical reactor had worked on the cloud. This discovery not only rewrites astrochemistry textbooks but also links the death of massive stars to the mysteries of early Earth. Perhaps the keys to the origin of life should be sought not in stellar cradles but in their death throes.
🎯 The SO₂ molecule, which we usually associate with the smell of a struck match, fills a space thousands of astronomical units across. If we could 'sniff' this cloud, we'd experience an aroma blending volcanic gases and burning sulfur — though in the vacuum of space, smells don't travel.
🎬 The idea of sulfur-based life has long excited science fiction writers: in the 'Star Trek' episode 'The Devil in the Dark,' a silicon-sulfur creature is featured, and in Arthur C. Clarke's novel '2010: Odyssey Two,' the possibility of sulfuric acid-based biochemistry is discussed. The discovery of a real 'sulfur factory' around an actual star makes such hypotheses a little less fantastical.