In space, no one can hear you burp
Tim Peake, a British astronaut who stayed on board the International Space Station in 2016, explained that the human digestive tract works differently in microgravity. The Daily Star reports that Peake was asked what it was like to burp with a space helmet on. He explained that people don't burp in space because burping - the rising of gas in the digestive tract - doesn't happen in microgravity. The air doesn't go up. It exits the body the other way. As a result, Peake explained, the space station is a stinky place. It smells "like a barbecue that's gone wrong. Burnt meat, scorched, metallic smell."
Identical twins, except for one thing ...
