uniphi_space_agency

After being back for about 4 or 5 hours, I asked for a diet coke. After drinking it, I thought I'd throw the empty can away - into a garbage can about 5 feet away, I "tossed" the can toward the garbage can - and it probably only made it 2 inches toward the garbage can. My internal model of the gravity vector was completely wrong! @astro_tani

The creepiest thing is looking out into deep space while you are on the sunlit part of the orbit. The sunlight washes out the starlight, and all you can see is the darkest black you can imagine, going on basically to infinity!

Astrodude

I let go of a cup of water thinking it would float, but it didn't. Good thing it was plastic. @Astro_127

I do agree, though, that its is mind-blowing that the human body works without gravity. Who would know that it's possible to drink water without gravity - how does it move to the stomach? All your internal organs are now floating in your body - how do they still work? Before I flew, I wondered it I would feel the same urge to urinate - doesn't that seem to be a gravity-dependent sensor? (it isn't - you feel the same urge as on the ground). @Astro_Tani

During one of my spacewalks, I had my boots attached to the robotic arm and was being moved from one worksite on ISS to another. During several moments, I was face-down towards the Earth, and could not see either the Space Shuttle or ISS in my field of view. I watched the continents roll by and felt like a satellite orbiting the Earth!

Astrodude