Asked Sep 24, 2019

How do we measure Dark Matter?


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Step 1

Two methods were used by DES scientists to measure dark matter. Firstly, maps of galaxy positions as tracers were created.

Step 2

Secondly, shapes of 26 million galaxies were measured in order to directly map the dark matter patterns using a technique called gravitational lensing.

Step 3

For precise measurements, the DES team developed various modern ways to detect the tiny lensing distortions of galaxy images and understand cosmic signals. These new technique...

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