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The Cosmic Ties that Bind Us

The results of a computer simulation of a cold dark matter universe.

The results of a computer simulation of a cold dark matter universe. Ordinary matter, in the form of stars and gas, is held to the dark matter via gravity and flows along filaments towards the largest local mass. The alignment of satellite galaxies around the Milky Way and Andromeda galaxies is a direct consequence of the filamentary nature of the universe.

By Stefan Keller

Astronomers have found a filament of ancient stars and galaxies that joins us to neighbouring clusters of galaxies and beyond to the vast interconnected universe.

Stefan Keller is a Research Fellow at the Research School of Astronomy and Astrophysics of the Australian National University, where he is the Operational Scientist for the SkyMapper telescope.

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