On “I am Buzz Aldrin, engineer, American astronaut, and the second person to walk on the moon during the Apollo 11 moon landing. AMA!”
What's the most frightening moment that you have ever experienced in space?

Apollo 11 astronaut, second person on the Moon
We retrieved 2 posts and 65 comments from u/BuzzAldrinHere, all from 2014, most often in r/IAmA.
On “I am Buzz Aldrin, engineer, American astronaut, and the second person to walk on the moon during the Apollo 11 moon landing. AMA!”
What's the most frightening moment that you have ever experienced in space?
On “I am Dr. Buzz Aldrin, back again on reddit. I am an aeroastro engineer, and crew member of humanity's first landing on the moon. AMA!”
Hi Buzz. I read that there was no plan B to get you off the moon in case of equipment failure, and you'd be simply left to die. What was your personal plan if this would of happend?
To continue trying to fix the problem until the lack of oxygen caused us go to sleep.
On “I am Buzz Aldrin, engineer, American astronaut, and the second person to walk on the moon during the Apollo 11 moon landing. AMA!”
Col Aldrin, what went through your head when you first looked back and saw the Earth from space?
"Where are the billions and billions and billions of people, on what I'm looking at? We're the only 3 that are not back there."
And we didn't get to celebrate. Because we were out of town.
On “I am Buzz Aldrin, engineer, American astronaut, and the second person to walk on the moon during the Apollo 11 moon landing. AMA!”
Is there any experience on Earth that even compares slightly to having been on the Moon?