Let's make this birthday one to remember.

65 years old (Born on August 29, 1959)

Hey Chris, happy birthday to Canada's favorite guitar-playing spacewalker! You've floated gracefully above our planet, snapped breathtaking Earth selfies from orbit that put Instagram influencers everywhere to shame, and serenaded us with Bowie tunes from the best stage ever—the International Space Station. Let's face it: Who else can say they literally "rocked" their job?

We hope your birthday is truly out-of-this-world—although you're probably used to that by now! Here's wishing you many more cosmic adventures ahead. Just keep inspiring us Earth-bound fans with those stellar tweets—we love our regular dose of Hadfield awesomeness back here on terra firma.