Before JWST began science operations, a dust-sized particle struck one segment of its 6.5-metre mirror at hypervelocity and left an uncorrectable deformation — damage revealed because Webb can detect nanometre-scale changes in its own optical surface.
When scientists announced Webb’s first definitive detection of Neptune’s auroras in March 2025, they revealed another surprise: observations taken in 2023 showed that the planet’s upper atmosphere had cooled by several hundred degrees since Voyager 2 visited in 1989—and scientists still don’t know exactly why.
Science news this week: James Webb telescope finds a never-before-seen substance, China's 'Great Green Wall' grows faster than natural trees, and a Medici murder mystery is solved
TNT Sports and CBS Sports to Reunite Michigan’s Iconic “Fab Five” — Chris Webber, Jalen Rose, Juwan Howard, Jimmy King & Ray Jackson — for Special NCAA Men’s Final Four Altcast on truTV & HBO Max