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I am pretty sure they (NASA) have all the planets mapped out, and of course the moon as well, and other planets moons. It is the only way to really use the satellite photos NASA has of them.
Mapping Texas is the most frustrating. They had several rail-roads come through and each one hired a survey company. They would pretty much spit on the ground, and say for this survey the world starts right here. Then some big rancher would come through and buy a lot of land and pay for a survey. Same thing, they just started their own unrelated to the others. Some sections of land run at a 45 degree angle to north, south, east west.
It has been modernized and the new systems are logical, but landowners that have had land in the family for generations might still use the old systems.
It is cool to see some of the original surveys of Oklahoma. Imagine a group of 30 to 40 men going into the Indian territory, no real law, no place to stop and get supplies. Several of them will have reports of men lost to Indian raids, or outlaws. Those guys were tough!
Now with modern equipment surveyors can get a point located down to a 1/10th of an inch in minutes.
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Glen
49 Year member of the Porsche Club of America
1985 911 Carrera; 2017 Macan
1986 El Camino with Fuel Injected 350 Crate Engine
My Motto: I will never be too old to have a happy childhood!
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