Recently spotted stream of stars running between galaxies which is unusual because streams of stars are normally seen within galaxy clusters.
The
star stream was discovered by looking at upgraded images captured by the Hubble Telescope in 2010. Conventional thinking would suppose that the stream running between multiple galaxies would be torn apart, but in this case the stream structure is intact. One possibility is that a "formation" of dark matter is in the area or its influence is being felt there and that is overcoming the pull of the galaxies the star stream flows by.
The star stream was found by accident while searching for signs of dark matter.
While there are still not a lot of observations of areas without dark matter, it could be possible that there are two universes intertwined, one that is naturally formed, and one that is shaped by another force, whatever it is that is dark matter, that is distorting it, possibly by slowing down the rate at which the universe should be slowing down.
Vernor Vinge wrote a novel, A Fire Upon The Deep, where different areas of the universe had different compositions that caused the maximum speed of spaceships to vary from very slow to very fast.
