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Please explain. I’m way too stupid.
Methane in Earth’s atmosphere mostly come from cow farts.
Methane in other atmospheres, as far as we know, doesn’t come from alien cow farts.
There’s a bunch of stuff that’s made by life, but it can also be made by not-life.
I believe the alien cow fart theory!
Burps primarily as far as the cows are concerned. Mostly just cow pies are coming out the other end.
Look for free Oxygen, the only reason it sits around is because of life. Sure, there are lots of forms of life that won’t show up that way, but if you do see it, you know you found life.
There are entire nebulae with just oxygen floating around.
They’re obviously full of plants and algae!
Get Back to me when you find it on a planet other than Earth.
