Not methane. Not CO2. Not hydrogen. Not helium. Good old air comprising 78.08% nitrogen & 20.95% oxygen.
No other planet has “air.”
25 posted on 07/20/2021 8:49:16 AM PDT by ProtectOurFreedom
(“Criminal democrats kill babies, folks. Do you think anything else is a problem for them?” ~ joma89)
27 posted on 07/20/2021 8:55:07 AM PDT by Red Badger
(Homeless veterans camp in the streets while illegal aliens are put up in hotels.....................)