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How do scientists know what exoplanets are made of?

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How do scientists find out information about other planets like what they are made of? Good question! After all, if the planets (and stars and galaxies, for that matter) are so far away, how can we know what they are made of? read more

THAT is how they know what parts of planets are made of, The rest is by logical deduction. if a planet has a global magnetized field, it HAS to have an iron nickel sulfur core and relatively rapid rotation.. read more

Well, we can send spacecraft to the planets. Man-made robots have landed on the moon, venus and mars and studied their surface. Spacecraft have also orbited or passed by all of the planets, and there is a spacecraft on its way out to study Trans-Neptunian Objects. We have also dropped atmospheric probes into planets like Jupiter that are made of gas. read more

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How Do We Find Exoplanets?
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How Scientists Find Exoplanets
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