We may never see the surface of a planet in another solar system, but that doesn’t mean we can’t imagine it with great accuracy. Equipped with careful observations, it’s possible to visualize the sunset as it would look from a distant exoplanet. This is what it looks like.
Five amazing, clean technologies that will set us free, in this month's energy-focused issue. Also: how to build a better bomb detector, the robotic toys that are raising your children, a human catapult, the world's smallest arcade, and much more.