What better way to kick off your weekend than with some random and interesting, yet true, facts that just might boggle your mind. To start things a bit differently, here’s an infographic showing 50 unbelievable facts about Earth. Did you know that at a cost of $150-billion, the ISS is currently the most expensive object ever constructed? Or, that Earth is the only planet in our solar system with plate tectonics? Continue reading for more.