Let's make this birthday one to remember.

68 years old (Born on April 28, 1957)

Happy Birthday, Leopold Eyharts! You've orbited Earth aboard Mir and the International Space Station—clearly, your idea of a birthday candle is rocket fuel. From floating effortlessly in microgravity to mastering spacewalks, you've truly taken "aging gracefully" to astronomical heights.

Here's wishing you another stellar year filled with adventures that are out-of-this-world (though topping your ISS missions might be tricky). May your celebrations today defy gravity as much as your career has—and remember: birthdays on Earth may lack zero-gravity cake flips, but at least crumbs won't float into sensitive equipment!

Cheers to you—our favorite astronaut who's always above it all!