Ben Simmons, and the cheetah on the spaceship
Imagine a spaceship that’s about 300 yards long when sitting stationary on Earth. Aboard this spaceship is a cheetah. You’re able to watch as the ship launches into deep space and approaches the speed of light, leveling out at about 50 miles per hour short of that limit. You’re also able to watch as the cheetah then goes to the back of the spaceship and sprints toward the front at its top speed of 70 miles per hour. How fast is the cheetah going?
We’ll return to the cheetah, but let’s get to Ben Simmons, first.