It’s been an action-packed month in space. Earlier in October, SpaceX hit a major milestone when the fifth Starship test flight successfully retrieved its booster on a launch pad for the first time. SpaceX also launched NASA’s Europa Clipper on Oct. 14 using a Falcon Heavy rocket, sending a probe to explore Europa, the fourth largest moon of Jupiter. On Oct. 7, a Falcon 9 rocket launched the European Space Agency’s (ESA) Hera mission to examine the impact of a 2022 NASA mission that intentionally...