JWST's Mirrors' Golden Glow

That's no flower. That's the eye behind what will be the planet's most amazing telescope. The James Webb Space Telescope is currently under construction at NASA's Goddard Space Flight Center just outside of Washington, D.C. The 'scope is designed to observe the Universe in infrared light, and ordinary glass, even the substances used to make visible light telescopes, won't do. Infrared light passes through it, or doesn't reflect efficiently. Gold, however, is an excellent reflector of IR light, s...