GLONGHUI, May 8 | The National Aeronautics and Space Administration (NASA) said on Tuesday that the Atlas V rocket carrying Boeing's new “Starliner” (Starliner) capsule will be returned to the hangar to replace a pressure valve, which will delay the long-awaited first manned test flight by at least 10 days. According to NASA, the launch date for this mission's new target is set as early as May 17. The first flight of the CST-100 interstellar spacecraft with astronauts was scheduled to launch Monday night from NASA's Kennedy Space Center in Cape Canaveral, Florida, to the International Space Station. However, the launch was cancelled when the countdown was less than two hours, because a pressure control valve in the upper liquid oxygen tank of the rocket failed while preparing to launch. Following a failed launch Monday night, NASA, Boeing, and the United Launch Alliance (ULA) announced that they would try to launch again as early as May 10.