> Not to be confused with gravitational waves from massive stellar bodies, [gravity waves] are an atmospheric phenomenon when a packet of air rises and falls due to variations in buoyancy.
I've looked up why before, tldr it's just because historically astronomers have never had to care in any detail about chemical reactions (this is not strictly true of course, but somewhat close for at least a large subset). So they just need a term for "crap that came from stars".
Eh, that grosses over the defining difference that hydrogen, helium, and a little bit of lithium are everywhere everywhen all at once because of The Bog Bang, whereas everything else is concentrated due to being produced in supernovas and neutron stars.
You are confusing gravity waves and gravitational waves.
Gravity waves are waves where the restoring force on some medium comes from gravity. Waves you see on the surface of water, for example, are gravity waves.
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