23 July 1999, 16:31:00 UTC, T minus Zero

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Colonel Eileen Marie Collins, U.S. Air Force, wearing ACES suit. (Annie Leibovitz)
Colonel Eileen Marie Collins, U.S. Air Force, wearing ACES suit. (Annie Leibovitz/NASA Art Program)

23 July 1999: at 12:31 a.m. Eastern Daylight Time (16:31:00 UTC), the Space Shuttle Columbia (OV-102) lifted off on its 26th mission, STS-93, to place the Chandra X-ray Observatory in orbit. The total mission duration was 4 days, 22 hours, 49 minutes, 37 seconds.

In command was Colonel Eileen Marie Collins, United States Air Force, on her third shuttle flight. This was the first time that a space shuttle mission had been commanded by a woman.

Colonel Collins had previously served as pilot aboard Discovery STS-63 and Atlantis STS-84. She would later command Discovery (STS-114), the “Return To Flight” mission following the loss of Columbia. She logged 38 days, 10 hours of space flight. Eileen Collins retired in 2006.

Space Shuttle Columbia (STS-93) launch from Launch Complex 39B, Kennedy Space Center, 16:31:00 UTC, 23 July 1999. (NASA)

© 2017, Bryan R. Swopes

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About Bryan Swopes

Bryan R. Swopes grew up in Southern California in the 1950s–60s, near the center of America's aerospace industry. He has had a life-long interest in aviation and space flight. Bryan is a retired commercial helicopter pilot and flight instructor.