Why NASA is returning to the shadows of night launches

Space · Published 20 October 2026 Swipe more like this →

In short: After years of daytime departures to ensure safety, NASA is preparing to return to nighttime shuttle launches. This shift marks a significant milestone in orbital logistics, balancing the rigorous demands of constructing the International Space Station with the hard-won lessons of past tragedies.

The upcoming STS-132 mission, scheduled for a targeted May 14 launch, represents a critical step in the assembly of the International Space Station. An Integrated Cargo Carrier alongside a Russian-made Mini Research Module are to be transported by the Atlantis shuttle. This follows a pattern of complex orbital construction, similar to the goals of the STS-116 mission which aimed to rewire the station's electrical grid and activate its primary cooling system. The mission's formal launch date is expected to be finalized following a Flight Readiness Review on May 5th. This specific flight will last for a duration of 12 days.

Safety protocols have dictated NASA's launch windows for years. Following the 2003 Columbia accident, the agency mandated that the first three post-accident missions be launched during daylight hours. This was a deliberate measure to provide a clear visual field for tracking any potential debris shed by the shuttle's external tanks. However, successful summer launches of both Discovery and Atlantis during STS-121 and STS-115 demonstrated acceptable fuel tank performance. These daytime requirements were specifically implemented to allow for better monitoring of the shuttle's external tanks. The agency sought to ensure any shed debris could be clearly seen by ground observers.

With those successes confirmed, NASA is now moving forward with night space shots. This transition allows for more flexible scheduling while maintaining the safety standards established after 2003. These missions are not just about transport; they are high-stakes engineering feats involving diverse international crews, including specialists from the European Space Agency, to build a permanent human presence in orbit. The crew includes William Oefelein, who holds the distinction of being Alaska's first astronaut. Additionally, Christer Fuglesang is recognized as Sweden's first spaceflyer and joined his agency in 1992.

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