The James Webb Space Telescope has helped astronomers detect the first chemical signs of supermassive stars, "celestial monsters" blazing with the brightness of millions of Suns in the early universe. It was discovered by the Hubble Space Telescope in 2015, and until recently held the record of oldest observed galaxy. It takes truly extreme temperatures to make nitrogen, which the researchers believe could only be produced by a supermassive star. The James Webb Space Telescope has helped astronomers detect the first chemical signs of supermassive stars, "celestial monsters" blazing with the brightness of millions of Suns in the early universe. It was discovered by the Hubble Space Telescope in 2015, and until recently held the record of oldest observed galaxy.