After a launch pad problem forced a flight delay Wednesday, SpaceX will try again Friday to send a mission to the International Space Station to replace NASA's two stuck astronauts. The new crew needs to get to the International Space Station before Butch Wilmore and Suni Williams can head home after nine months in orbit. Once at the space station, the U.S., Japanese and Russian crew will replace Wilmore and Williams, who have been up there since June. The two test pilots had to move into the space station for an extended stay after Boeing's new Starliner capsule encountered major breakdowns in transit. Starliner's debut crew flight was supposed to last just a week, but NASA ordered the capsule to return empty and transferred Wilmore and Williams to SpaceX for the return leg. More local videos here: https://youtube.com/@9news Subscribe to NEXT: https://youtube.com/@Nexton9NEWS Stay connected: 9NEWS Website: https://www.9news.com/ Facebook: https://www.facebook.com/ilike9news X: https://twitter.com/9NEWS Instagram: https://www.instagram.com/9newsdenver/ Download the 9NEWS App: https://www.9news.com/appredirect/ Sign up for the 9NEWSLETTER: https://www.9news.com/email 9NEWS (KUSA) is located in Denver, Colorado.