Dec. 25, 2021
NASA's James Webb Space Telescope, the world’s largest and most powerful telescope built to date, successfully blasted into orbit Saturday. The launch marked the long-awaited start of the Webb telescope’s mission. "The more distant something is, the fainter it looks. So the larger the mirror, the fainter the thing you can see," said Marcia Rieke, an astronomer at the University of Arizona and principal investigator of one of Webb’s four main instruments. "The other thing is that the larger the mirror, the finer the detail you can see."