PhilpaxArtemis II lifts off: four astronauts begin 10-day lunar mission
Minutes after launch they reached "ten thousand miles per hour". That's 2.78 miles per second. Nuts. No doubt the speeds go even higher later too.
I'm sure people here are already familiar with the speeds these things go, but that's the first time I've confronted a fact like that and it blew me away.
I was thinking the exact same thing when they announced the speed. I assume the top speed of Artemis will be at least double that too...