Questions tagged [planets]

For questions about any large astronomical bodies classified as planets, and their effects on their systems.

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Plausibility of helium dominated atmospheres on super-Earths

I've been using this helpful diagram a lot for worldbuilding. Now I came to think about the fact that helium is more massive than hydrogen, thus a scenario where hydrogen escapes, but helium is ...
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What's a Good Sphere-Mapping Resource?

After reading the help sections for asking questions, I am now confident that my question does in fact appear to be on-topic and in scope for this website. I currently use a page called PlanetMaker ...