click to enlarge the saucer - photo by NASA
Actually, of course, this is not a flying saucer,but the domed top to a 70 foot tall vacuum tank at the John H. Glenn Research Center's Electric Propulsion Laboratory.
The three technicians in protective suits had just emerged from within the tank where they had been cleaning in the toxic mercury atmosphere, following ion engine testing in the tank. NASA has used this photo many times over the years and features it prominently in their galleries, since it looks so much like something it isn't.
Actually, of course, this is not a flying saucer,but the domed top to a 70 foot tall vacuum tank at the John H. Glenn Research Center's Electric Propulsion Laboratory.
The three technicians in protective suits had just emerged from within the tank where they had been cleaning in the toxic mercury atmosphere, following ion engine testing in the tank. NASA has used this photo many times over the years and features it prominently in their galleries, since it looks so much like something it isn't.
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