Hubble on Twitter: "#OTD in 2002, the fourth servicing mission launched to the Hubble Space Telescope! Several improvements were made to the observatory by astronauts over the course of five spacewalks –
Hubble Servicing Missions - Genesis Engineering
Servicing Missions
Teleskop-Express: Astro-Shop + Fotografie + Naturbeobachtung
U.S. Postal Service Issues James Webb Space Telescope Stamp - Connecticut newsroom - About.usps.com
Making house calls to Hubble - RocketSTEM
Servicing Missions
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