Is There Reflectors on the Moon?

Take it from astrophysicist Tom Murphy. Sure, lightsabers, dilithium crystal warp drives, and Mars colonies are a lot of fun to consider. But a physics-based perspective on energy tells us that we need to accept the limits to growth, stop chasing  sci-fi fantasies, and get to work building a steady-state economy that works for people and the planet. Instead of focusing on growth, maybe we should focus on growing up.

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