Col. Chris Hadfield captured the Internet’s attention throughout his tenure commanding the International Space Station, or ISS, regularly releasing videos, replying to tweets and interacting through multiple forms of social media.

After a video of him releasing a revised cover of “Space Oddity” by David Bowie went viral, he safely landed in Kazakhstan with two other crew members, ending his command of the ISS and his five-month mission on board the station.

While Hadfield addressed many questions about space while onboard the station, there’s one question that everybody needed answered: "How do you go to the bathroom in space?"

He explains how it is done in this video. Fortunately, there wasn't a live demonstration as well.