STS-93 was a space shuttle mission that launched on July 23, 1999. The mission was notable for being the first to be commanded by a woman, Eileen Collins. The primary objective was to deploy the Chandra X-ray Observatory, a powerful telescope designed to observe X-rays from high-energy regions of the universe. The shuttle, Columbia, completed a successful flight lasting nearly 5 days. During this mission, the crew also conducted various experiments and tests related to the observatory's deployment. Chandra has since provided invaluable data, enhancing our understanding of cosmic phenomena.