In this science video, the man with a brain the size of a planet, Joe Scott, investigates tools and techniques for building a Dyson Sphere – basically an artificial inverted planet manufactured by a sentient race around a star which can suck up the entire power output of the sun.
Looking for these incredible artefacts might also be away for us to spot an alien civilisation from Earth. In fact, there’s a very outside chance that we might have already spotted one.
Will we ever be able to make one of these amazing things? Let’s hope our species survives long enough to get there.