AAS Report #2: Dark matter and large scale structure

18 years, 2 months ago

AAS Report #2: Dark matter and large scale structure

A note: I am attending a meeting of the American Astronomical Society in Seattle. So astronomers can map out the location of dark matter by very carefully taking observations of large areas of the sky and painstakingly teasing out the distortions in the shapes of background galaxies. Armed with the distortion to the galaxies’ shapes and their distances, astronomers began to map out the location the dark matter. It’s been theorized for some time that as the Universe cooled after the Big Bang, dark matter formed long filaments many millions of light years across. It’s a 3D map of the dark matter: You can think of the left hand side of the image being dark matter that is nearby, and the right side being farther away.

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