For a while now, scientists have always had a hunch and assumption that invisible highways connecting galaxies existed that explain how matter moves through the universe. What scientists were assuming has come to a reality. Utilising the Multi Unit Spectroscopic Explorer (MUSE) instrument, astronomers have managed to capture the vivid image of a cosmic web exposing a space-spanning filamentous network.
The hidden highways are made from gas and dark matter. They are also known as cosmic webs and look like roads connecting cities. These universal highways have been a theoretical aspect until now because prior to this discovery they were hard to discover. Fortunately, with advanced technology and innovation that scientists and astronomers have mastered, the mystery surrounding this network has finally been revealed.
Why do these cosmic highways matter and what are they?
We have seen that the cosmos is constructed like a web, a vast, interwoven web of filaments that stretches throughout space. Unlike the AI-generated images published by astronomers online, these filaments are primarily unseen but help shape galaxies throughout their length by directing the flow of matter and energy. Their presence has long been suspected by scientists, but verifying it has been a whole different story.
As I mentioned earlier, the cosmos is web-shaped, and scientists have always thought that the universe is organised, but they appear and act like highways guiding the movement of stars, galaxies and planets, and this is something that has been transpiring over the last billion years. Another thing to note is that the structures are mostly dark matter.
Perhaps you are wondering why they matter and why they are so important to the scientific community. The truth of the matter is that they play a role in the formation of stars by feeding galaxies with the necessary universal raw materials. Just like anything else in the universe, galaxies do not operate or exist in isolation; there is a need for them to be surrounded and interact with the cosmic web, from which they draw their energy from as well.
The Cosmic Web and Dark Matter: How they are connected
All the matter that makes up the universe is composed of dark matter, about 85% of it, and the same dark matter plays a significant role in shaping the structure of the cosmic web. The filaments’ brightest galaxies form their shape due to their intersections and interactions in the cosmos, therefore making it the backbone of the universe, guiding the flow of galaxies and the formation of stars.
A universe map: How researchers recorded and captured the unseen
Identifying and detecting something as unclear as the cosmic web is not like cutting butter with a hot knife. Because of advanced technology, in a region of the sky full of galaxies, scientists captured light from distant hydrogen gas using MUSE, a sophisticated spectroscopic instrument on the Very Large Telescope in Chile. Through this, they were able to capture the cosmic web.
Is there a destination for these highways? The great unsolved question
Now that astronomers and scientists are certain that the universe has highways, where they lead is the big question. Perhaps they lead the cosmic structures and galaxies toward each other. A theory by researchers states that the highways are responsible for distributing dark matter through the universe, with a chance at solving some of physics’ unanswered questions and solutions.
All this places us and scientists in a place of many questions. Yes, the highways have been discovered, but we do not initially know where they lead and the actual roles they play within the universe. This is another experiment and research that needs to be done to decipher. As it is always mentioned, the universe is mysterious. Today we found highways; tomorrow something else will come up; we just need to be on the lookout.