NASA reveals more hidden Easter eggs aboard Mars Perseverance rover

It's no secret that NASA scientists love to hide messages aboard its missions. Space fans thought they knew about all of the Easter eggs on the Mars Perseverance rover — but more surprises were revealed over the weekend, on Easter Sunday. 

The first is a unique, 17-digit ID on the mission nameplate, reading "AONREHMELN1730055" — the first official, off-planet Product Identification Number (PIN).  NASA compared it to a Vehicle Identification Number (VIN) on a car. PIN numbers are given to off-road vehicles, which now includes the six-wheeled, self-driving Mars rover.