While kids across the U.S. will wake up tomorrow looking for gifts under the tree, NASA is hoping to celebrate with its own Christmas present a little higher up. The launch of their James Webb Space Telescope is slated for 7:20 am EST Saturday, setting up an unprecedented window into the cosmos. As science correspondent Miles O'Brien reports, NASA is hoping to unlock mysteries of the universe. PBS NewsHour is supported by - https://www.pbs.org/newshour/about/funders