usually means something rather more mundane than a fireball. basically anything that happened that you didn't want to happen is an anomaly. 10 years ago the fo

usually means something rather more mundane than a fireball. basically anything that happened that you didn't want to happen is an anomaly. 10 years ago the folks putting your reaction wheels together botched it, and now they're acting slightly weird? anomaly. you charged your batteries too hard for years because you thought "max" was a great setting for your battery chargers, and now they're failing? anomaly.