Trollzyn the Infinite wrote:Occidens Praseodymia wrote:Perhaps the environment is so harsh on Venus that it produces the chemical reactions to produce this substance without the need of biology.
Life on Venus but not Mars?
No way.
We've already deduced that life did exist on Mars at one point. Adding Venus to the equation suggests that life at one point may have been more common in the Sol System. Who knows, perhaps there was once life on all the planets in it and only Earth got lucky enough to keep it. Or maybe some of them still do house life but we can't get there to see for sure.
Quite bold to assume that earth was lucky.