Dark matter, a mysterious substance that comprises around 25 percent of the universe, does not shine, or absorb or reflect light, which has traditionally made it largely undetectable.
That is until now.
Scientists have captured the first composite image of a dark matter bridge – a web-like superstructure connecting galaxies together – which has been predicted for decades.
The image, which combines a number of individual images, confirms predictions that galaxies across the universe are tied together through a cosmic web connected by dark matter that has until now remained un-observable.
The effect was measured in images from a multi-year sky survey at the Canada-France-Hawaii Telescope.
"This image moves us beyond predictions to something we can see and measure," said Hudson.
They combined lensing images from more than 23,000 galaxy pairs located 4.5 billion light-years away to create a composite image or map that shows the presence of dark matter between the two galaxies.
Results show the dark matter filament bridge is strongest between systems less than 40 million light years apart.
Epps said:
The research was published in the journal, Royal Astronomical Society.
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