According to CCTV news, on June 18th local time, due to helium leaks and thruster issues, NASA and Boeing have decided to postpone the planned landing time of the "Starplane" spacecraft to June 26th, in order to have more time to view data.
It is reported that the interstellar aircraft is currently scheduled to land at 4:51 Eastern Time on June 26th at White Sands Space Port in New Mexico.
The Boeing Interstellar, carrying two American astronauts, was launched on June 5th and arrived at the International Space Station on June 6th to dock with it. The original plan was to separate from the station on June 14th and return to Earth.