Limited The Big Bang theory all signatures shirt

After initial expansion, the universe cooled enough to allow formation of later subatomic particles and simple atoms. The Big Bang theory all has the signature Giant clouds of these primitive elements (mainly hydrogen, with some helium and lithium) then recombine through gravity, eventually forming the Original stars and galaxies, descendants can see today. Astronomers also observed the effect of gravity on dark matter around galaxies. Although much of the mass in the universe seems to be in the form of dark matter,

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