yes sorry i was thinking of different moons. as for what i was saying about the harsh climates. yes there are things that could survive out there but fully evolved super survival bugs just don't pop up out of no where if any of our theories on how life came to be are even remotely accurate, well i find it very hard to believe something could evolve on a place such as Europa unless it was planted in which cause where did that life come from, the most likely explanation is earth making them not alien life.
as for the challenge i was giving, here ill put it simple with the number of stars that are out there or even in our galaxy why isn't the night sky way brighter then it was, cause realistically at and point you look up at in the sky there are probably 5 or 6 stars in your line of sight. and if space is empty there should be nothing to prevent the light of those stars from reaching us. So why is the night sky doted with stars NOT jam packed with them?
sean read up on gamma bursts you'll find them interesting, there a phenomenon which may lead to conclusion of life being EXTREMELY rare in the universe.
oh and 10^22 = 1000000000000000000000000