Scientists on Reddit

Ed Lu

NASA astronaut and physicist, B612 Foundation

u/edluB612 ↗AMA only
How we know it's theirs

The 2014 r/IAmA AMA, posted from this account

We retrieved 11 posts and 171 comments from u/edluB612, dated 2012 to 2020, most often in r/IAmA, r/space and r/B612Foundation.

Best moment

A redditor wrote in r/IAmA

On “I am Ed Lu - former NASA astronaut and now running the B612 Foundation which is building an asteroid spotting space telescope”

I think we need to hear this full story, please!

u/edluB612 replied

We were actually just getting suited up on ISS for a spacesuit test. Yuri and I were in the airlock, and all buttoned up in our EVA suits. Then the cooling failed in my suit. But the suit generates a…

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We were actually just getting suited up on ISS for a spacesuit test. Yuri and I were in the airlock, and all buttoned up in our EVA suits. Then the cooling failed in my suit. But the suit generates a lot of heat due to the electronics and also the fact that the CO2 removal system uses an exothermic reaction to remove CO2. So within a few minutes the airflow into my suit got really really hot (think of a parking lot in Houston on a summer day but while wearing a snowmobile suit_)

Personal storyStories from orbitr/IAmA · 60 points as of Nov 2026Full thread ↗

More moments

A redditor wrote in r/IAmA

On “I'm retired astronaut Ed Lu, now running the B612 Foundation. We are a private organization at the forefront of protecting the Earth from asteroid impacts. AMA!”

What do you think Carl Sagan would have to say about the B612 Foundation and your work?

u/edluB612 replied

BTW, the only time I actually spoke to Carl Sagan was when I was an undergrad at Cornell. I was late for something and running down a hall in the physics building. I came around a corner and nearly ran…

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BTW, the only time I actually spoke to Carl Sagan was when I was an undergrad at Cornell. I was late for something and running down a hall in the physics building. I came around a corner and nearly ran over Dr. Sagan! The only words I ever said to him were "excuse me!". So I've got that going for me......

Excerpt
Personal storyStories from orbitr/IAmA · 37 points as of Nov 2026Full thread ↗
u/edluB612 wrote in r/IAmA

On “I'm retired astronaut Ed Lu, now running the B612 Foundation. We are a private organization at the forefront of protecting the Earth from asteroid impacts. AMA!”

Apollo 13! and of course Galaxy Quest.

u/edluB612 replied

BTW, my crewmates and I on Shuttle mission STS-106 all watched Galaxy Quest in crew quarters just before our launch! "Never Give Up!"

Personal storyStories from orbitr/IAmA · 197 points as of Nov 2026Full thread ↗