Imagine installing a refrigerator that can cool things down to –352 degrees F. Now imagine doing the installation at an altitude of 370 miles.
That’s what astronauts John Grunsfeld and Rick Linnehan had to do to the Hubble Space Telescope on the morning of March 8. The seven-hour, 20-minute spacewalk involved snaking hoses through Hubble’s interior, installing the picnic cooler-size refrigerator, and attaching a radiator to Hubble’s exterior.