Meanwhile researchers at the Kavli Institute for the Physics and
Mathematics of the Universe have been attempting to map historical
changes in dark matter by analysing images of more than ten million
galaxies.
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Originally Posted by February 13, 2019, Kavli Institute for the Physics and Mathematics of the Universe
"If further data shows we're definitely right, then it suggests something is missing from our current understanding of the Standard Model and the general theory of relativity," says physicist Chiaki Hikage.
According to Einstein's general theory of relativity, gravity warps space and time. To date, this theory has successfully predicted the expansion of the universe, the existence of black holes, and the bending of light from distant stellar objects. If cosmologists confirm that the observed universe is evolving more slowly than the theory predicts, it would mean an entire branch of physics has not yet been discovered.
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Quote:
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Originally Posted by February 13, 2019, Kavli Institute for the Physics and Mathematics of the Universe
Hikage and his team analysed images of ten million galaxies from the Hyper Suprime-Cam (HSC) Survey. This 870 megapixel camera, attached to the 8.2 metre Subaru telescope at the summit of Maunakea, Hawaii, surveys the sky, drawing a detailed map of the universe. It is enabling researchers to study galaxies billions of light years from Earth. These galaxies existed billions of years ago, but their light is only reaching Earth today, making it possible for researchers to study the universe from its infancy.
Using the information from these images, the researchers were able to make the most detailed three-dimensional map of dark matter in the universe to date. The map was consistent with past studies. However, it also suggests cosmic structures might be evolving more slowly than predicted by other research teams.
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Story and video here :-
https://phys.org/news/2019-02-historical-dark.html