August 25, 2016 at 11:10PM

Today I Learned: 1) Phone numbers used to be associated with a word, the first two letters of which essentially made up the first set of digits for the phone number. 2) Remember the moon buggy? That iconic little bit of NASA engineering the Apollo astronauts used to get around on the moon? Today I learned that the moon buggy is properly called the LRV (Lunar Reconnaissance Vehicle), and that they were only used on the last three Apollo missions (15, 16, 17). 3) Speaking of LRVs, there's another kind of LRV -- the Lenticular Re-entry Vehicle. This was a flying saucer invented but never deployed by the US sometime during the cold war. I don't think a lot is publically known about the LRV, even though it was declassified in 1999, but I think it was meant to be a nuclear-powered, manned saucer that would sit in low Earth orbit until needed for missile defense... or possibly missile deployment.