The massive Dyson Sphere introduced in the TNG episode “Relics” is a true marvel of engineering. In fact, that is a massive understatement. The Dyson sphere as shown would be an absolutely incredible work of a civilization millions of years ahead of us with resources nearing infinite. It’s a shame that the episode (one of my favorites) does not do this structure justice. The mere existence of the Dyson sphere would be an incredible coup to the science of the Federation. The surface area of the interior of such a sphere with a radius of 1 AU (astronomical unit – the average distance from Earth to the sun) would be 2.8 x 1017 km2, or about 550 million times the surface area of Earth. While our heroes in “Relics” are somewhat in awe of the sphere, I feel like they are significantly less impressed than they should be.