American astronauts Barry "Butch" Wilmore and Suni Williams were supposed to spend eight days in space, but NASA now says they could be at the International Space Station for eight months because of questions over whether the Boeing Starliner is capable of flying them home. Mark Strassmann has more. "CBS Evening News with Norah O'Donnell" delivers the latest news and original reporting, and goes beyond the headlines with context and depth. Catch the "CBS Evening News" every weekday night at 6:30 p.m. ET on the CBS Television Network and at 10 p.m. ET on the CBS News app. Subscribe to the "CBS Evening News" YouTube channel: https://youtube.com/CBSEveningNews Watch full episodes of "CBS Evening News": https://cbsnews.com/evening-news/full-episodes/ Follow "CBS Evening News" on Instagram: https://instagram.com/cbseveningnews/ Like "CBS Evening News" on Facebook: https://facebook.com/CBSEveningNews Follow "CBS Evening News" on X: https://x.com/CBSEveningNews Download the CBS News app: https://cbsnews.com/newsletters/ Try Paramount+ free: https://paramountplus.com/?ftag=PPM-05-10aeh8h For video licensing inquiries, contact: licensing@veritone.com