In combination, the factors mentioned here and in my last two posts constrain the “cosmic habitable age” to narrower dimensions.
Enceladus is an especially fascinating case. Nearly 100 geysers of water ice are currently jetting out of its south pole at supersonic speed.
There is a classical proof of God’s existence that uses universal concepts such as mathematics, proposed most prominently by St. Augustine.
The newer study agrees that the composition of Venus’s atmosphere is unusual but not that it is evidence for life.
It’s the evidence from Sagan’s fiction and other popular writing that is especially provocative.