Unanswered Questions

The Structure and End of the Universe

What makes up the universe?

If you said stars and galaxies, gas clouds, black holes, photons, neutrinos, etc. you’re only partially correct. These known materials constitute only 5% of the mass-energy in universe! Dark matter comprises another 23%. Dark matter does not interact with electromagnetic radiation but does interact with gravity. Thus it is invisible and we can see right through it. The remaining 72% is made up of dark energy.


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