Nasa astronauts Butch Wilmore and Sunita Williams experienced delays in their return from the International Space Station due to thruster failures and helium leaks in Boeing's new Starliner capsule. Although initially scheduled to return in mid-June, the problems were detected during docking. Nasa is reviewing alternative plans and has yet to set a new return date. Engineers are investigating the issues further to resolve the complications with the spacecraft.

Source: No return date yet for Sunita Williams and Butch Wilmore: Nasa