September 4
The Space Shuttle Discovery rolled to launch pad 39B for the launch of the Ulysses solar probe. (Johnson Space Center, Space News Roundup, September 7, 1990)
September 5
The Marshall Star reported that MSFC Director Jack Lee had been presented NASA's 1990 Equal Employment Opportunity Medal. (Marshall Star, September 5, 1990)
September 5
NASA scrubbed the launch of Space Shuttle Columbia for third time after discovering a leak as liquid hydrogen and liquid oxygen were being poured into the fuel tank. ("Leak Forces Launch Scrub, Huntsville News, September 6, 1990)
September 10
The first of the chemical releases from the Combined Release and Radiation Effects Satellite occurred at 6:10 a.m. Greenwich mean time. The release occurred over the Pacific at a latitude of 17.50 degrees south and a longitude of 178.79 degrees east. (See MSFC History Office Microfiche #2127, "Notable MSFC Events During 1990," September 10, 1990)
September 10
A new hydrogen recirculation pump was installed and leak checks were performed on the Space Shuttle Columbia in preparation for STS-35. (Marshall Star, September 12, 1990)
September 11
The Marshall Center celebrated its 30th anniversary with festivities that included music, fireworks, and a message from former NASA Administrator Tom Paine. (Marshall Star, September 12, 1990)
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