On Wednesday, NASA hopes to launch it's Artemis 2 mission. The Orion spacecraft is expected to spend 10-days flying around the moon and back. It's the first crewed flight to the Moon since the Apollo missions. Dr. Jeffrey Gillis, Research Professor of Physics, Washington University, joins Megan Lynch. He says this launch will, 'build great momentum in the Artemis program,' allowing astronauts to test functions of the spacecraft, and tools they'll use when on the moon's surface. He also discusses the importance of exploring for water as part of the program. (Photo by Miguel J. Rodriguez Carrillo/Getty Images)