On February 7, 1984, astronaut Bruce McCandless II made history, venturing untethered into the cosmos with the Manned Maneuvering Unit (MMU). Floating freely outside Challenger’s payload bay, this bold leap represented a breakthrough in space exploration, enabling activities far from the spacecraft. His words, echoing Neil Armstrong’s famous line, captured the mix of awe and bravery: “It may have been one small step for Neil, but it’s a heck of a big leap for me.” | The Galactic Void