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Astronauts John Grunsfeld (left) and Andrew Feustel performs repairs and upgrades on the Hubble Space Telescope during STS-125 extravehicular activity May 18, 2009 in Earth Orbit Stock Photo - Alamy
Fixing Hubble. The Audacious Mission to Save the… | by John Mulnix | The Startup | Medium
Astronaut John Grunsfeld placing a NOBL on Bay 8 after he removed the... | Download Scientific Diagram
NASA's Hubble Space Telescope spots bright galaxy located 200 million light-years away | Nasa News – India TV
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John M. Grunsfeld - Wikipedia
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Expanding Universe. The Hubble Space Telescope by John Mace Grunsfeld, Owen Edwards, Zoltan Levay, Jr., Charles F. Bolden (Hardcover, 2021) for sale online | eBay
Astronauts release Hubble telescope back into space | Reuters.com
The Webb Space Telescope is 100x as powerful as the Hubble. It will change astronomy. - Vox
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File:UGC 1810 and UGC 1813 in Arp 273 (captured by the Hubble Space Telescope).jpg - Wikimedia Commons
Hubble Space Telescope: Photographing the Universe Children's Book by John Hamilton | Discover Children's Books, Audiobooks, Videos & More on Epic
Hubble Space Telescope at 30: Our window into the universe
In this NASA photo astronaut Andrew Feustel, mission specialist, performs work on the Hubble Space Telescope as the first of five STS-125 spacewalks kicks off a week's work on the orbiting observatory,
Hubble Space Telescope Gets an Upgrade | NASA
File:Astronauts Richard M. Linnehan and John M. Grunsfeld EVA (27990746376).jpg - Wikimedia Commons