During his five months onboard the International Space Station, Commander Chris Hadfield became a social media sensation, gaining nearly one million Twitter followers thanks to his regular posts. Among them were many amazing photos of Earth from space, from which we've pulled a few of our favorites.
Check them out, alongside Hadfield's witty quips.
Photos, left to right:
7. Our Earth is mostly liquid rock. We live on a thin crust, with occasional hot spots, like Mt. Etna