This week, the Russian space agency Roscosmos had hoped to return to the Moon after an absence of nearly 50 years. Instead, on Saturday it lost control of its Luna-25 lander. The agency explained the spacecraft “switched to an off-design orbit and ceased to exist as a result of a collision with the lunar surface”. Yet, in an interview aired on state television, the agency’s chief, Yuri Borisov, pledged his nation’s unwavering commitment to lunar exploration: This is not just about the prestige of the country and the achievement of some geopolitical goals. This is about ensuring defensive capabilities and...