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galactic clustersSpace
•73% Informative
Dark matter was detected racing away from the conventional "normal" matter that comprises stars, planets, moons and everything we see around us in the colliding galaxies.
The galaxy clusters "getting ghosted" in this research are part of a complex of thousands of galaxies that are collectively known as MACS J0018.5+1626.
Individual galaxies escaped unscathed from this cosmic pile-up because of the vast space between them.
The team used a phenomenon called the "Sunyaev-Zel'dovich (SZ) effect to study MACS J0018.5 +1626 .
The SZ effect can be used to measure the speed at which hot gas is produced, and thus the speed that normal matter moves.
The researchers simulated the collision of galaxy clusters, a type of cosmic accident reconstruction.
Just before they collided, the galaxy clusters were racing together at around 7 million mph ( 11 million kph).
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