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so stars vary in their compositions and

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this can affect their stellar properties

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but what about the planets orbiting

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those stars today we're going to talk

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about rocky planet composition using

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cookies planets like cookies are formed

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from an initial recipe of ingredients

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including oxygen magnesium carbon and

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silicon in our solar system these

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ingredients are combined in well-known

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portions but what if we change the

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proportions and try different recipes

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for high carbon to oxygen ratio will

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make cookies with no eggs at all planets

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with lots of carbon will form carbide

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minerals which are hard and brittle now

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let's change the magnesium to silicon

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ratio by varying the amount of butter

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and flour planets with extra magnesium

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to silicon will have very runny olivine

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rich mantels with the right proportions

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and the right ingredients we can make

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delicious earth-like cookies to learn

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more join us online or in person for our