NASA Astronaut Delay at Space Station Linked to Boeing Starliner Launch

NASA Astronauts' Prolonged Stay on ISS Due to Starliner Issues

When two seasoned NASA astronauts embarked on a journey to the International Space Station (ISS) aboard Boeing's Starliner capsule, they anticipated a return home within a week. However, their mission has now extended beyond three weeks as NASA and Boeing work to resolve technical issues that manifested during the trip to the ISS. Despite several postponed landing dates, Boeing assures that the astronauts are not stranded.

Reasons for Postponing Starliner’s Return Trip

The return trip has been delayed to allow NASA more time to scrutinize the spacecraft's propulsion system, crucial for in-flight maneuvering. This system, while integral during the mission, does not return to Earth and burns up during reentry. "We’re taking extra time to review all the data and gather as much information as possible while the service module is in orbit," said Steve Stich, NASA’s commercial crew program manager. Additionally, NASA aimed to avoid conflicts with scheduled spacewalks. Notably, a planned spacewalk was postponed due to a water leak in an astronaut’s spacesuit, while another spacewalk remains on schedule.

Investigated Problems

The issues under investigation include the malfunctioning of five out of the capsule's 28 thrusters during docking. While four were successfully restarted, officials believe that heat from the docking maneuvers caused the shutdowns. One thruster remains offline but is not expected to pose a problem for the return journey. Additionally, the capsule experienced a small helium leak at launch, which escalated to four more leaks upon reaching the ISS. These leaks, believed to be caused by faulty rubber seals, are used to pressurize fuel for the thrusters. Despite these setbacks, Boeing confirms that the leaks are stable and not a risk.

What Lies Ahead

NASA and Boeing will look into possible landing dates after the spacewalks are completed. The Starliner capsule has a capacity to stay docked at the ISS for at least 45 days, if necessary. During this extended period, mission managers continue to evaluate the thruster and helium leak issues to ensure they are resolved for future flights. Meanwhile, the astronauts contribute to chores and scientific research on the ISS, and continue to check the systems on the Boeing capsule. Supplies remain sufficient for both the astronauts and the seven other residents aboard the station, eliminating any immediate need to expedite their departure.