Astronomers Measure the Signal of Dark Matter From 12 Billion Years ago - by BrianKoberlein
The cosmic microwave background as seen by different satellites. Credit: NASA/JPL-Caltech/ESA
It’s the most distant measure of dark matter ever made, and it opens a possible crack in our current model of the universe. In the standard cosmological model, known as the LCDM model, dark energy drives the expansion of the universe, striving to push galaxies apart, while the gravitational attraction of matter and dark matter cause galaxies to clump together.
The uncertainty of the team’s measurements means their result isn’t conclusive. It’s possible that they simply under measured the clumping scale. But if it’s right, it suggests that the laws of the universe were a bit different 12 billion years ago. Combined with observations that show aThere are a lot of possibilities. But the biggest success of this work is that we now have actual data.
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