The James Webb Space Telescope is impressive. It's three stories tall as wide as a tennis court. It's got a 21 foot primary mirror. And then it's got these four instruments that are just incredibly powerful. It's the largest, most technologically challenging space telescope ever created. It's 100 times more powerful than the Hubble Space Telescope, but a half the weight. It's designed to look back in time. Even further than Hubble, to see the very first galaxies to form after the big bang. Building Webb is truly a feat of innovative engineering. Each material must survive the turmoil of a launch and the varying temperatures of space. And it all starts with the elements. This is the James Webb Space Telescope.