for some reason, a superpower/magic item that I've repeatedly fantasized about throughout my life is to always have like, one of those hampster water bottles but human sized and with infinite water. just pleasantly cool water and I can drink from it whenever I want

My mobile internet is so bad that downloading the thumbnails all at once freezes Cohost

Spent the past several hours trying to make a "simple" model for what kinds of gasses can exist in a planetary atmosphere. This only models Jeans escape; solar wind erosion is a lot more complicated and isn't modeled, so just because a planet could retain water doesn't mean that it does (Venus, Mars).

Some things I learned:

• Mass has a much stronger effect on atmospheric retention than insolation (temperature)
• It's pretty rare for a planet with less than 1e23kg of mass to have a significant atmosphere
• A planet doesn't need to be much more massive than Earth to enter gas giant territory
• I had to cheese this model a bit to allow Titan to retain methane, despite the fact that it does IRL

they making a new pokemon type called Dyke