If all goes as planned, NASA will launch a rocket to return to the moon Saturday afternoon. This first phase will send an unmanned capsule to lunar orbit and back, but NASA wants humans to land on the moon in 2024 or 2025. As science correspondent Miles O'Brien reports, it has taken a long time and a lot of money to get Artemis going, an approach that has been the subject of some criticism. PBS NewsHour is supported by - https://www.pbs.org/newshour/about/funders