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From the iron in your blood to the calcium in your bones, the stuff that makes 'you' was forged in stars. It's even in your DNA – carbon, oxygen, nitrogen, etc. all came from ancient stars to become planets, puppies and you. Happy #PeriodicTableDay! https://go.nasa.gov/40AAgxJ
#NASAExoplanets

GMS: Periodic Table of the Elements: Origins of the Elements

The periodic table organizes all the known elements by atomic number, which is the number of protons in each atom of the element.
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#NASAExoplanets #periodictableday

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