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How do we know what elements the Universe is made of?

Daniel and Kelly’s Extraordinary Universe

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Unraveling the Universe's Composition

This chapter delves into the fundamental elements that construct the universe, blending humor and skepticism, particularly regarding the moon landing. It discusses the methods like spectroscopy used to understand cosmic materials and acknowledges the uncertainties surrounding dark matter and dark energy. The speakers also reflect on historical approaches to measure Earth’s density, revealing the clever techniques that have led to a refined understanding of our planet's composition.

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