- #36
willstaruss22
- 108
- 1
Yes your star will reach red giant stage well before all the surface water on your planet seeps into space on its own.
As long as you have liquid water some amount of it would evaporate.KTevolved said:Sorry about bringing this up again but something confuses me. I get that the water vapor would only last several billion years but what about the liquid ocean on the surface? The planet would get about 92% solar luminousity the Earth does and the reason its heated is the greenhouse gases.
The atmosphere is 1.5 bar which would make the boiling point higher. Plus the atmosphere is denser than Earth's so wouldn't the oceans stay until its star becomes a red giant or will the oceans disappear before then? I am just confused how liquid water on the surface can seep, but i fully understand water seeping in the exosphere.
You have a planet that at the start of your scenario is already at the hotter verge of HZ, right? And it's going to become hotter?KTevolved said:How long will the red giant take to evaporate all the surface water? Could life survive after that?
Right. But in long run this process would remove water from surface anyway, just in less direct method.KTevolved said:So its only water in the upper part of the atmosphere that gets lost and not water from the surface just reaching escape velocity?