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In 2021, Jeff Bezos and Richard Branson each spent approximately ten minutes in space aboard their own private spacecraft. The combined cost of these joyrides was estimated at over half a billion dollars. While the billionaires floated in zero gravity and marvelled at the curvature of the Earth, critics pointed out that the same money could have provided clean water to millions of people or funded climate change research for years. Space exploration has always provoked this tension between inspiration and pragmatism. The Apollo programme, which put humans on the Moon in 1969, cost the equivalent of over two hundred billion dollars in today's money. Was it worth it? The technological spin-offs — satellite navigation, memory foam, water purification systems — have benefited humanity enormously. But the primary motivation was geopolitical competition with the Soviet Union, not scientific advancement. Today, the space industry is increasingly driven by private companies rather than governments. SpaceX, Blue Origin, and others are racing to commercialise space travel, establish Moon bases, and eventually send humans to Mars. The vision is compelling: humanity as a multi-planetary species, no longer dependent on a single fragile world. But the ethical questions are uncomfortable. Should we spend trillions on Mars colonisation while millions lack basic healthcare, education, and food security on Earth? Or is space exploration precisely the kind of ambitious, long-term investment that humanity needs to ensure its survival?

Source: Related to lessons: Science, Ethics, Technology