NASA Before PowerPoint in 1961

These days you can probably figure out how much fuel you need to get to the moon and back on a smartphone app, and if you want to know the weight of Neptune then you can simply search it on Google. But back in the 1961, scientists at NASA were still doing things with a piece of chalk and a giant blackboard. And believe it or not, they put the first US astronaut into space that very same year, a feat made all the more impressive when you remember that the electronic calculator hadn’t even been invented yet

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Image credits: J. R. Eyerman, via LIFE