Let's make this birthday one to remember.

55 years old (Born on October 07, 1969)

Happy Birthday, Karen Nyberg! You've boldly gone where few have ventured—floating gracefully aboard the Space Shuttle Discovery and expertly engineering your way through life on the International Space Station. Honestly, after orbiting Earth at 17,500 mph while conducting groundbreaking experiments in microgravity (and somehow managing to wash your hair up there), blowing out birthday candles should be a piece of cake!

Here's wishing you another stellar year filled with cosmic adventures closer to home—and fewer zero-gravity hairstyles. May gravity always treat you kindly today as we celebrate an astronaut who truly knows how to reach for the stars!