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Interact

Welcome to Interact, where you can tell us what you think.

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image credit: Jay Ouellet; image source

Positions of the Planets

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Smithsonian Education - Minerals, Crystals, and Gems

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Rate these Quotations by Famous Physicists

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"Who ordered that?" - I.I. Rabi expressing dismay at the identification of the muon, a hard-to-account-for particle whose mass is 207 times the mass of the electron.

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"Only by doing the best we can with the very best that an era offers, do we find the way to do better in the future." - Frank Drake

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Which physics relationship is more important?

How dark matter is required to provide enough gravity so that matter in the primordial universe clumps together (to begin the formation of stars and galaxies).
How the force of gravity is 39 powers of ten weaker than the electromagnetic force. Had gravity been much stronger, stars would have burned out much faster, and life would not have had enough time to evolve.



Which unanswered question in physics is more important?

What is dark energy?
Can the theories of gravitation and quantum mechanics be merged?


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