cosmic web defination
Answers
Answer:
Composed of massive filaments of galaxies separated by giant voids, the cosmic web is the name astronomers give to the structure of our universe.
Why does our universe have this peculiar, web-like structure?
The answer lies in processes that took place in the first few hundred thousands years after the Big Bang.
Answer:
Gravity has woven the universe into a cosmic web. Primordial gas that filled the young cosmos collapsed into expansive sheets, then into filaments, separated by huge voids. On very large scales, this gas has a texture like soap bubbles or tangled spiderwebs.
But even though computer simulations first revealed this large-scale structure decades ago, it’s difficult to picture — literally. We can easily see the light from galaxies and galaxy clusters, but the sparse gas bridging from one cluster to another has largely evaded detection.
With cutting-edge ground-based instruments, that’s changing. In the October 4th Science, Hideki Umehata (RIKEN Cluster for Pioneering Research and University of Tokyo) and colleagues report an image of the cosmic web when the universe was only 2 billion years old. Sure, it’s fuzzy, but it’s also the best view we’ve got!