Obviously a hardware 'event' which if it has never happened before in different software; is likely down to Odyssey over-stressing some component in your system... GPU and overheating for a guess (NOT an expert, just a fellow end user). I have had heat alarms (set reasonably high) from my GPU (RTX 2080) during planetary mission but so-far never a hard crash and reboot.
If it turns out to be a single isolated case, keep an eye on temps (air flow/cooling?) but carry on. If it happens again I guess you might be headed for a complete component failure. Best of luck commander, fingers crossed for you. o7