In a hurry? The earth beneath your feet is spinning at almost 800 mph
And yet you don’t feel it. In fact, the Earth itself moves around the Sun at more than 65,000 mph, and Sun revolves around the center of the Milky Way galaxy at nearly 80,000 mph. This all leads to an interesting question: what kind of motion can you feel, at least in principle, and what kind is it simply impossible to feel? If you follow this question all the way to its logical conclusion, you’ll go on a journey that bumps right into some of the most interesting physics of our time: Albert Einstein’s theories of relativity.read more
