The fundamental ‘cosmic web’ of dark matter throughout the universe has finally been observed from Earth, confirming theories of how the universe was shaped.
“This result is a resounding confirmation of a key prediction of structure formation in the universe,” said Jörg Dietrich from University Observatory Munich, Germany. “Not only did we for the first time see a dark matter filament directly, we also confirmed that it’s total mass [dark matter plus normal matter] and the amount of hot gas are in agreement with predictions.”
Large cosmic structures, such as galaxies, exhibit gravitational affects that cannot be justified by the amount of normal matter present in the universe. A principle exists to describe this behavior and is known as the cold-dark-matter model, and it is the foundation of modern cosmology.