Summary: NASA astronauts Robert Behnken and Douglas Hurley are expected to land back on Earth on Sunday afternoon. The historic mission aboard the SpaceX Dragon Endeavor, which has been docked at the International Space Station since May, will mark the first manned launch and return of a commercially built and operated American spacecraft. Dave Mosher, senior space correspondent with Business Insider joins Hari Sreenivasan for more. PBS NewsHour is supported by - https://www.pbs.org/newshour/about/funders
