Let's make this birthday one to remember.

68 years old (Born on June 05, 1956)

Happy Birthday, Richard! You truly took "using your head" to new heights when you commanded the STS-90 Neurolab mission. Not everyone can say they've boldly gone where few brains have gone before—literally becoming their own test subject in space. Your courage and humor under pressure continue to inspire us all.

Here's hoping your birthday is filled with laughter, joy, and zero-gravity cake (just watch out for floating candles!). May this year bring you as much excitement and success as commanding a shuttle full of astronauts turned guinea pigs. Keep reaching for the stars—and keep those neurons firing strong!