All detected in the atmosphere of Enceladus, one of the HUNDRED or so populated "Moons" of Saturn....
If we are REALLY, truly engaged in a search for LIFE in this solar system, Enceladus is the most obvious place to begin.
The water geysers of Enceladus spew thousands of miles into the air, into SPACE, into the rings of Saturn....
A spaceship passing through would become disabled, possibly, by massive ICE CRYSTALS....
But, who knows? No one on EARTH, that's certain. We lack the courage, all of a sudden, to do any worthwhile space exploration...
NASA has become like FORD or CHRYSLER or any major CORPORATION.
They give the public the same product over and over and over again...
Notice that I rarely take notice of any NASA news, all their garbage about planets that they have located BILLIONS of miles away that are possibly Earth-like and capable of supporting life....
I don't give a rat's ass, I am content to find out as much as possible about the NINE known worlds and their moons...
THAT is where our future lies, that is where the TRUTH lies.
Maybe I am just a GROUCH, for I doubt that S.E.T.I. is as inept as they pretend to be. Save your money. NASA takes more than enough of your hard earned cash. S.E.T.I. is just a smoke screen for the ignorant....