In spaceflight, an anomaly is an anomalous outcome compared to what was expected. The severity of the anomaly varies. Typically, if the world outside of the organization hears about an anomaly, it was severe enough to cause a Loss of Mission (LOM) or Loss of Vehicle (LOV). Internally, when things behave anomalously, they're referred to as off-nominal, and are subject to internal investigations to determine the cause.

This is a _very_ off-nominal outcome and the investigation will absolutely involve outside organizations and halting the program during the investigation until the investigation completes with a sufficient determination of faults and accompanying remediation plans.