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Recommended Reading: Half the universe’s missing matter has just been finally found1 min read

We’ve long know that a lot of the matter in the galaxy was unaccounted for its evidence was visible through gravitational force but its presence was not observable. Now, two different groups have made big discoveries; half of that unaccounted for matter can be attributed to baryons, which link galaxies together “through filaments of hot, diffuse gas,” according to New Scientist. The gas isn’t hot enough for x-ray telescopes to pick it up, but thanks to the Planck satellite, the baryon particle were finally observed. There’s still a whole bunch of matter that’s hiding out there, but this is a pretty major development.


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