Canadian astronaut Commander Chris Hadfield will soon be simply, “Mr. Hadfield.”

That’s because he has announced that he is resigning.

In this case, “resigning” means stopping his job as an astronaut.

Hadfield has been an astronaut for 35 years.

Recently, he gained wide popularity after sending photos and videos to Earth from the International Space Station.

Many people around the world enjoyed his tweets and Facebook posts from space.