spectral data of GRB 230307A’s kilonova (IMAGE) NASA/Goddard Space Flight Center Caption This graphic presentation compares the spectral data of GRB 230307A’s kilonova as observed by NASA’s James Webb Space Telescope and a kilonova model. Both show a distinct peak in the region of the spectrum associated with tellurium, with the area shaded in red. The detection of tellurium, which is rarer than platinum on Earth, marks Webb’s first direct look at an individual heavy element from a kilonova. Credit Illustration: NASA, ESA, CSA, Joseph Olmsted (STScI). Usage Restrictions No restrictions. License Public Domain Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.