The cosmic web is linked by huge filaments that act as bridges between galaxies. Scientists have found that some of them rotate.
A group of scientists from the Leibniz Institute for Astrophysics in Potsdam in Germany published a study of the largest known structures in the universe in an article in the journal Nature Astronomy.
After analyzing data from the Sloan Digital Sky Survey, scientists studied 17,000 filaments. They found that the way galaxies move inside some of the huge cosmic structures suggests that they rotate around the central axis of the filaments.
The fastest speed at which the researchers recorded the rotation of galaxies around the central axis of the filaments was approximately 360,000 km/h.
While Space.com’s authors speculate that the spin itself is caused by the powerful gravitational fields of these filaments pulling in gas, dust and other materials, study co-author Noam Libeskind said he was “not entirely sure why this is happening.”
This is partly due to the fact that the fibers are so large that they are incredibly difficult to analyze in detail.
The researchers also note that it wasn’t the Big Bang that caused the spinning effect.