Want to take that starship of yours on a cruise through the galaxies? Well, you are lucky–astrophysicists have the galactic map ready for you.
It’s a 3D map of a 2 Billion light years distance. Pretty awesome, right?
Physicists studied the data of red shifts of galaxies and then plotted the distribution of matter across the local universe. They came up with this mind-boggling map of how the voids and super-clusters are located.
“The galaxy distribution isn’t uniform and has no pattern,” said Michael Hudson of the University of Waterloo. “It has peaks and valleys much like a mountain range. This is what we expect if the large-scale structure originates from quantum fluctuations in the early universe.”
Hudson also said, “A better understanding of dark matter is central to understanding the formation of galaxies and the structures they live in such as galaxy clusters, superclusters and voids.”
So, what’s the connection?
The universe has been expanding since the Big Bang, nearly 14 billion years ago. However, Therefore, galaxies and clumps of visible matter are not moving away in an uniform manner. Instead, how they are moving away is beyond the predictable expansion of the universe. These excess motions, or “peculiar velocities” are of key interest because the chief suspect of the cause behind these motions is . . . yes, you got it . . . the gravitational pull of dark matter.
The research has been published on the journal Monthly Notices of the Royal Astronomical Society.