STS-125 Launch of Final Hubble Servicing Mission – 6 Year Anniversary

Marking the end of an era, spacewalkers Andrew Feustel and John Grunsfeld removed the no-longer-needed COSTAR corrective optics package from the Hubble Space Telescope today and replaced it with the Cosmic Origins Spectrograph, an $88 million state-of-the-art instrument designed to study the large-scale structure of the universe. The Cosmic Origins Spectrograph, comprised two instruments, one
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