Posts in tag

intermediate


How do astronomers calculate the distance of the Sun from the Earth, or the actual size of the Sun, or the speed of travel of Earth in its orbit around the Sun? Clearly, from an answer to one of these questions one can find out the answers to the others. But how do we find …

Thomas Heath Local business reporter and columnist, writing about entrepreneurs and companies in the Washington metropolitan area September 15 at 6:15 PM Oil prices jumped on global markets Sunday night after a wave of weekend drone attacks instantly erased half of Saudi Arabia’s oil production. Brent crude on Sunday traded at $70.98 per barrel on …