NASA spent a decade and nearly $1 billion for a single launch tower

Enlarge / A long-exposure view of the mobile launcher at NASA's Kennedy Space Center in Florida. (credit: NASA)

A new report published Tuesday by NASA's inspector general looks into the development of a mobile launch tower for the agency's Space Launch System rocket.

The analysis finds that the total cost of constructing and modifying the structure, known as Mobile Launcher-1, is "at least" $927 million. This includes the original $234 million development cost to build the tower to support the Ares I rocket.

After this rocket was canceled in 2010, NASA then spent an additional $693 million to redesign and modify the structure for the SLS rocket. Notably, NASA's original estimate for modifying the launch tower was just $54 million, according to the report by Inspector General Paul Martin.

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