Solar power is more powerful than many people realize. It would only take 191,817 square miles of solar panels to power the entire Earth. That's roughly the size of Spain. Science Insider tells you all you need to know about science: space, medicine, biotech, physiology, and more. Subscribe to our channel and visit us at: http://www.businessinsider.com/science Science Insider on Facebook: https://www.facebook.com/BusinessInsiderScience/ Science Insider on Instagram: https://www.instagram.com/science_insider/ Business Insider on Twitter: https://twitter.com/businessinsider Tech Insider on Twitter: https://twitter.com/techinsider