NASA is getting ready to launch its massive, fully expendable rocket for the first crewed flight to the Moon since Apollo. The agency’s new era of spaceflight comes with a few parts from its past, specifically three rocket engines that have previously flown on space shuttle missions.

NASA Administrator Jared Isaacman appeared to suggest that space shuttle Discovery may not be relocated to Houston's Johnson Space Center in Texas.

NASA's iconic Discovery space shuttle, which launched dozens of times from Florida, may not be relocated to Houston for display.

Jared Isaacman, the new NASA administrator, signaled he was open to offering other spacecraft to Texas instead of the Discovery, housed at the Smithsonian.

In the aftermath of the Challenger disaster, NASA quietly explored Shuttle C, an uncrewed heavy lift vehicle built from Space Shuttle hardware to carry massive cargo into orbit. On paper it promised cheaper launches and a new era of exploration,