Let's make this birthday one to remember.

64 years old (Born on August 29, 1960)

Happy Birthday, Thomas Marshburn! Hope your day is as out-of-this-world thrilling as your adventures during ISS Expedition 34/35. From mastering microgravity flips to maneuvering effortlessly inside the space station, you've set an astronomical standard for astronaut awesomeness.

May this year bring you more joyous floating tumbles, fewer stubborn anti-gravity coffee splashes and plenty of epic returns to Earth. Remember: Age on a NASA ID badge may orbit upward—but zero gravity counts backwards!

Here's waving from way below—cheerfully grounded earthlings who still can't believe the incredible cosmic selfies you've shared from orbit. Thanks for bringing humanity along; happy birthday!