Our solar system is careening around the centre of the galaxy like a meth-snorting dirt biker loop-de-looping inside a metal sphere at the county fair at 492,126 mph. Our galaxy is spinning like an overclocked whirling dervish at 600,000 mph, and oh, by the way also hurtling outwards at 372 mph. (Oops, wait, that’s per-second. It’s actually 1,300,000 mph**).