Space.com on MSNOpinion
Most normal matter in the universe isn't found in planets, stars or galaxies – an astronomer explains where it's distributed
But the Big Bang theory predicts that about 5% of the universe's contents should be atoms made of protons, neutrons and ...
Space looks very dark from Earth. But does the solar system, and the universe for that matter, have an area that's the darkest of all? When you purchase through links on our site, we may earn an ...
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