On Wednesday, India became the fourth country to successfully land a craft on the moon, when its Chandrayaan-3 mission delivered two robots, a rover and a lander, to the moon’s southern polar region. It’s a location where no craft has ever successfully landed before due to the area’s boulder-ridden surface. This news might give you a sense of déjà vu. The accomplishment arrives on the heels of an ill-fated attempt to achieve the same feat by a Russian lander, Luna-25, which crashed into the lunar surface earlier this week. The two missions are part of a new moon race. In...