Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more . CNN  —  A crew of international astronauts is slated to launch to the International Space Station on a mission that will take the reins from NASA’s Butch Wilmore and Suni Williams, allowing them to return home after an unexpectedly extended and politically charged journey . The Crew-10 flight, part of a routine ISS staff rotation, is jointly operated