interesting video posted there on finding ozones in other atmospheres would be an indicator of life
he makes a very valid point
oxygen is a highly reactive element, so unless there is something to replenish the oxygen in the atmosphere, all of it would quickly disappear into oxides
chyro = cryogenic aka, deep freeze
interesting that they refer to 300,000 years as 3000 life times
its more like 15,000 generations if you count a new generation every 20 years
and i'm guessing if you were on a spaceship with nothing else to do, there would be a lot of fucking going on, so it would probably be only 18 years between generations, IF that long