Our Spinning Universe


Our Spinning Universeby Kris HallbomEvery second you travel thousands of miles. In the time it takes you to read this sentence, you’ve already traveled more. Here’s the breakdown:Planet Earth is spinning at 1,040 mph at the equator. At the same time, the Earth is circling around the sun at 67,000 mph. And the sun is spinning through our local star cluster at 45,000 mph. Our local star cluster rides on the outer spiral arm of the Milky Way, which is spinning another 500,000 mph. The Milky Way is rotating through the Local Group of galaxies at 180,000 mph. And the Local [...]