What Is the James Webb Space Telescope?

For more than a year now, the world has been treated to breathtaking images of the outer reaches of our universe from the NASA instrument. But how does it even work? --- For more videos from Smithsonian Magazine: https://www.smithsonianmag.com/videos/ Digital Editorial Director: Brian Wolly Supervising Producer & Scriptwriter: Michelle Mehrtens Video Editor: Sierra Theobald (02:15)