Astronauts Mike Massimino and Mike Good will conduct SM4’s fourth spacewalk today, focusing on the repair of the STIS instrument (Space Telescope Imaging Spectrograph). A power supply failure in 2004 rendered the “black hole hunter” inoperable. Watch NASA’s video about the STIS repair.
Welcome to the Hubble Space Telescope Servicing Mission 4 Blog
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ESA/Hubble Outreach Coordinator Colleen Sharkey blogs live from the launch site at Kennedy Space Center in Florida, USA and from Goddard Space Flight Center in Greenbelt, Maryland, where a team of European engineers and scientists provide mission support.