Really ratty rat
People said that constructing a Dyson sphere around the sun would be challenging, but they were wrong! All that was needed was rats. Lots of squeaky rats. You see, rats are able to detect the sun's heat, which gives them heat. The reason they can sense heat is because they have a heat-sensitive organ called the optic nerve. This gives them an image of their surroundings and helps them find food. A rat can even feel its own heat if it is in the sun, because of a complex series of receptors in the skin. You can imagine how this might affect a Dyson sphere: the rats will be able to sense and respond to their surroundings, which would then make them more likely to get food. So, what do the rats do? They don't just walk into the sun, they actually run across it. As long as the rats' heat-sensitive organs aren't injured or damaged, they're fine. "You might think this is a really dumb idea," says Shattuck, "and you'd be right."