This is an incredible achievement:
One of the most important discoveries to emerge from the study is that dark matter appears to form an invisible scaffold or skeleton around which the visible universe has formed.
Although cosmologists have theorised that this would be the case, the findings are dramatic proof that their calculations are correct and that, without dark matter, the known universe that we can see would not be able to exist.
‘A filamentary web of dark matter is threaded through the entire universe, and acts as scaffolding within which the ordinary matter – including stars, galaxies and planets – can later be built,’ Dr Massey said. ‘The most surprising aspect of our map is how unsurprising it is. Overall, we seem to understand really well what happens during the formation of structure and the evolution of the universe,’ he said.
So now we’ve determined where it is, the next step will be to determine what it is. Interesting comment in the article:
Various experiments on Earth are under way to try to find out what dark matter is made of. One theory is that it is composed of mysterious sub-atomic particles that are difficult to detect because they do not interact with ordinary matter and so cannot be picked up and identified by conventional scientific instruments. Comparing the maps of visible matter and dark matter have already pointed to anomalies that could prove critical to the understanding of what constitutes dark matter.
It’s like trying to see infrared light with a pair of sunglasses. Should be the great effort of physics for the next 20 years.