Buzz spent 93 minutes walking on the surface of the moon, and has now traveled 93 times around the sun.
The second man on the moon celebrates his birthday Friday, the oldest of the four living moonwalkers. Aldrin, who landed with Neil Armstrong to become one of only 12 people ever to walk on the lunar surface, was born on a Monday, on Jan. 20, 1930.
Aldrin, who regularly posts to social media, gave thanks for the sundry well wishes made during the day.
