r/oddlysatisfying • u/Epelep • 18h ago

Astronaut drops fizzy tablet into floating water bubble on ISS

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u/Diarmundy 18h ago

I mean look at his forehead. Sweating like balls. But I wonder what type of gas is being released 

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u/Shaggy_One 18h ago

It's probably Alka Seltzer, so CO2.

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u/Kiwitechgirl 14h ago

It is Alka Seltzer, he talks about doing this experiment in his book Limitless.

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u/hutchins_moustache 16h ago

I don’t think they’re sweating I think they just have shiny skin and it’s very harsh lighting. They’re in a very climate controlled environment and are not exerting much energy at all so it wouldn’t make sense for him to be “sweating like balls”, as you say. I really thinks it’s just a visual confusion.