It is 15 years since human hands touched NASA's Hubble Space Telescope for the last time. Michael Good (on the end of the shuttle's Remote Manipulator System) works to refurbish and upgrade NASA's Hubble Space Telescope during Servicing Mission 4. Image credit NASA Today, more than three decades after its launch in 1990, Hubble continues to send stunning images back to Earth and conduct groundbreaking science.
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