NASA is often viewed as the epitome of big ideas and extreme planning. But sometimes even they go above and beyond, either with incredible improvised fixes, or missions that survived the test of time and then some.
Hubble Got Glasses

The greatest space telescope astronomers have was almost a giant flop. When the telescope launched in 1991, the pictures it sent back were muddled and far below the predicted quality. It turned out a mirror had been ground to the wrong specifications, leav