01 / 4 · Kurzgesagt
Hydrogen is fuss to helium in their cores, releasing tremendous amounts of energy.
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Now we usually think of buoyancy with water, but you could think of things like helium balloons being buoyant in our atmosphere.
Some planets, like Jupiter and Saturn, they're really low density, and we know they're mostly made of hydrogen and helium.
The smallest real star, are red dwarfs, about 100 times the mass of Jupiter, Barely massive enough to fuse hydrogen to helium.
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