A Dyson Spheres is viable If I were cold and I wanted a candle, I could put my hands close to it to warm myself a little, but if I wanted to get all the heat from the candle I would just have to surround

Search for Extraterrestrial mega structures. Since we came out of the caves, we humans have not stopped building, currently the road and railway networks cover all the continents adding up to millions

So here we are again. I am really enjoying space at the moment. With this new space race emerging and Elon Musk sending off the Falcon Heavy, talk of moon missions, the BFR in the making and manned missions