Senator Mark Kelly says astronauts aren’t in a space jam when they let one rip … telling us passing gas in a full space suit isn’t at all like you might imagine.

We caught up with the Democratic Senator from Arizona Thursday in D.C. … and, he gave us the 4-1-1 on cutting the lunar cheese.

Watch the video … Kelly — who’s completed four out-of-this-world missions up to the International Space Station — explains why astronauts on the ISS should feel secure letting a little methane out of their A-S-S.