i thought the temperatures melted the oceans there along with the civilization. before earth i believe Venus was an older earth. As the sun grows bigger and fierce, earth will become inhabitable and people will move to mars
How do you know and can be so sure about it ? I have visited few lections regarding that state and it all fails over time no matter what. There is no such statement we can make that somewhere beside planet Earth some organic (at least!) life are even existed some time ago.