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.
A fifth-grader in Kansas City clicked ball-and-stick atoms together in science class and asked her teacher if she'd made a real molecule — he photographed it, sent it to a chemistry professor, and at ten years old she became co-author of a published paper on a structure nobody had ever described