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Boeing’s Starliner won’t make it to the ISS now because its internal clock went wrong

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Boeing’s Starliner won’t make it to the ISS now because its internal clock went wrong


Boeing’s CST-100 Starliner launched into space for the first time ever Friday morning, but the spacecraft failed to insert itself into a stable orbit that would allow it to rendezvous with the International Space Station.

What happened: An Atlas V rocket safely carried Starliner into space from Cape Canaveral Air Force Station on Friday, but the capsule had an anomaly with its internal system timer. After Starliner separated from the Atlas V rocket, it believed it was in a different segment of the mission than it really was. Instead of executing an engine burn to get into its target orbit, Starliner ended up doing a different burn designed to maintain control and precision. The spacecraft burned too much fuel, which will make it too difficult for NASA and Boeing to attempt to dock with the ISS. 

Coming home early: NASA attempted to send commands to the spacecraft to rectify the situation during the mission, but unfortunately mission control found itself in a signaling blind spot when it came to accessing the communications satellites in orbit. Once communications were reestablished, the team on the ground decided it would be more prudent to stabilize the spacecraft into a safe, optimal orbit for reentry.

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“Had we been on board, there could have been actions we could have taken” to override the automation and get the spacecraft into its proper orbit, says NASA astronaut Nicole Mann, who will be flying aboard Starliner for its future crewed test flight. NASA administrator Jim Bridenstine echoed those sentiments at a post-launch press conference Friday, telling reporters that had this been a crewed mission, “our crew would have been safe.”

Next steps: Boeing and NASA still have no clue why Starliner’s timer was off, and that’s something they’ll be studying intensely over the next several days. Although they cannot test Starliner’s ability to dock safely with the ISS, they will still be ensuring the spacecraft is functioning properly during its time in orbit, and determining what mission objectives can still be met with the remaining propellant onboard. The plan for now is to return Starliner to Earth Sunday morning, to its original planned landing spot in the White Sands desert in New Mexico.

Timeline?: Bridenstine says its too early to determine whether Starliner will need to go through another uncrewed test flight, and how this will affect the timeline for the Commercial Crew Program. He did emphasize that he does not anticipate Starliner’s problems will affect SpaceX’s development of Crew Dragon, the other vehicle NASA will use to send astronauts to the ISS. Crew Dragon, which went to the space station in March, will undergo a pad abort test in January as the final checkmark before its first crewed flight sometime in 2020.


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