@graf @alex I wonder why venus ended up with so much more gaseous matter than Earth did? The CO2 concentrations are at like 75 earth atmospheres, and the N2 concentrations are at like 8 earth atmospheres. There was never a chance that an atmosphere like that was going to be able to support earth-like life.
- replies
- 2
- announces
- 0
- likes
- 1
@publius @graf @alex It looks like the Hadean era had an atmosphere of about 27 atmospheres CO2. Besides the massive amount of carbon that was put into rock, oxygen also was captured by various types of rock that would react with oxygen prior to the oxygen catastrophe.
The incredible thing is that it looks like the first forms of life were already here only 500 million years after the formation of the planet. That's sort of crazy to think about.
The other thing that's crazy to think about are the time spans involved, where life basically chugs away for timespans the human race can't even comprehend, even at the single celled level.
The incredible thing is that it looks like the first forms of life were already here only 500 million years after the formation of the planet. That's sort of crazy to think about.
The other thing that's crazy to think about are the time spans involved, where life basically chugs away for timespans the human race can't even comprehend, even at the single celled level.