What goes up must come down – just not always on the Moon
Astrobotic has continued its policy of transparency with a report into the failings that resulted in its Peregrine lander burning up in Earth's atmosphere rather than making a soft landing on the Moon.,"the most likely cause of Peregrine's anomaly was the failure of a singular helium pressure control valve, called PCV2, within the propulsion system."
It did not go well, and for various reasons, including worries about the mission schedule – more on that later – Astrobotic opted to complete the propulsion feed system in-house in early 2022. During a final set of leak tests, one valve – PCV1 – leaked. Another – PCV2 – did not. PCV1 could be accessed and repaired. PCV2 could not as it was deep within the spacecraft, and getting to it would require dismantlement."This would have invalidated costly, time-intensive spacecraft acceptance tests that had already been completed and could not be rescheduled without missing Peregrine's scheduled launch date.
The rest of the mission consisted of gathering whatever science could be gleaned from the lander's instruments. A landing attempt was called off, and instead the spacecraft was sent on a trajectory to
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