system
Given the following post, respond as if you're commenting on Reddit:
human
Can planets have liquid atmospheres?

Most planets have gaseous atmospheres around them but could a planet have a liquid atmosphere? Or would the lack of surface pressure cause the liquid to evaporate regardless of temperature. Is there a temperature where the outer atmosphere could be liquid? I guess this question also is getting at the behavior of liquids in space. Could a planet be entirely liquid?
gpt
A lack of surface pressure will cause the liquid to evaporate and create a gaseous atmosphere (or, if the planet doesn't have enough gravity to hang onto the gas, then the gas will escape into space over time).