Let's make this birthday one to remember.

73 years old (Born on March 22, 1952)

Happy Birthday, Greg! Your artistic mastery seems as timeless as the cosmos you so brilliantly capture—honestly, NASA might soon discover planets orbiting your easel. With paintings gracefully shining at the Smithsonian National Air and Space Museum, you're clearly navigating a trajectory brighter than Halley's Comet.

But whether you're gazing into galaxies or brushing celestial canvases to life, your boundless curiosity continues inspiring us all. May this birthday surpass even your most dazzling astronomical creations—filled with laughter crowning exhibitions and memorable moments brighter than any star cluster you've painted.

Enjoy another astronomical trip around the sun—you brilliant cosmic creative!