Let's make this birthday one to remember.

64 years old (Born on September 17, 1961)

Happy Birthday, Pamela Melroy! You've boldly gone where few have ventured—commanding space shuttles and inspiring countless dreamers back on Earth. After three incredible missions orbiting our planet, you've proven that gravity isn't the only thing you can defy with style.

From piloting spacecraft to commanding a shuttle mission as just the second woman ever to do so, your stellar achievements continue to shine brightly. May this birthday be filled with laughter that's out of this world—and cake delicious enough to launch taste buds into orbit. Here's wishing you another year full of cosmic adventures and zero-gravity dance moves!