So, did it actually have too little fuel left to complete the mission (when it actually struck its target), or was it faulty sensors which indicated a false fuel reading. Or was it that pesky little sensor which couldn't differentiate between moving toward or away from the target. There are too many explanations for this to be the truth.
The article notes that the DART "estimated" how much fuel was left..
I don't understand why they are using software to estimate fuel usage, when a simple physical gas gauge would do the job more efficiently and far more accurately.. ( no "estimation" at all.. actual measurement of fuel left.. )
Likewise, I agree on the sensors issue..
Explanations like that are intuitively disconcerting..
Telemetry alone should have caught any discrepancies immeadiately, unless the person monitoring that activity was on a bathroom break or something.. ( i.e., not doing their job. )
All in all, very disappointing..