Using the Immersion Grating Infrared Spectrometer (IGRINS) on the Gemini South telescope at the International Gemini Observatory, astronomers have directly measured the atmospheric composition of WASP-189b and found it echoes the elemental makeup of its host star, offering the clearest evidence yet that planets inherit their chemical identities from the disks that formed them. An artist’s impression of an ultrahot Jupiter. Image credit: Sci.News. WASP-189...
