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It’s crazy what an Alka-Seltzer tablet does in space

I’m loving what astronauts have been doing on the space station in recent years. We’ve seen them make sandwiches, make music videos and capture incredible photos. And it’s all easy to find and share on the Internet. Here’s another cool thing an astronaut tried in zero-gravity. Watch what happens when he puts an Alka-Seltzer tablet in water.

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