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SheltieLover

(64,616 posts)
Mon Feb 17, 2025, 11:48 AM Feb 17

First Direct Image of the Cosmic Web Reveals the Universe's Hidden Highways

https://scitechdaily.com/first-direct-image-of-the-cosmic-web-reveals-the-universes-hidden-highways/

A cosmic filament, 3 million light-years long, has been directly imaged for the first time — offering a new glimpse into the hidden framework of the Universe!

Matter in intergalactic space is arranged in a vast network of interconnected filaments, known as the cosmic web. Now, after hundreds of hours of observations, an international team of researchers has captured the sharpest-ever image of one of these cosmic filaments. This filament links two actively forming galaxies and dates back to a time when the Universe was only about 2 billion years old.

The Cosmic Web and Dark Matter
Dark matter, which makes up about 85% of all matter in the Universe, plays a crucial role in shaping cosmic structures. Under gravity’s influence, it forms a vast, intricate web of filaments. At the intersections of these filaments, the brightest galaxies take shape. This cosmic web serves as the backbone of the Universe, guiding the flow of gas that fuels star formation in galaxies. Studying how this gas moves and interacts could significantly improve our understanding of how galaxies form and evolve.

However, directly observing this intergalactic gas is extremely difficult. Scientists have mainly detected it indirectly — by measuring how it absorbs light from distant, bright objects. These observations, though valuable, do not clearly reveal how the gas is distributed. Even hydrogen, the most abundant element in the Universe, emits only a very faint glow, making it nearly impossible for previous-generation telescopes to detect this elusive gas.

More at link.

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First Direct Image of the Cosmic Web Reveals the Universe's Hidden Highways (Original Post) SheltieLover Feb 17 OP
It's an incredible universe we live in. Beautiful and scary. erronis Feb 17 #1
I agree! SheltieLover Feb 17 #2
Mind blown! bronxiteforever Feb 17 #3
That splat you might've heard was my brain melting SheltieLover Feb 17 #4

erronis

(18,298 posts)
1. It's an incredible universe we live in. Beautiful and scary.
Mon Feb 17, 2025, 11:56 AM
Feb 17

My thanks to the scientists who work so hard - even in the headwinds of the know-nothings.



A twin of the cosmic filament observed in the MUDF as seen in a supercomputer simulation describing the large-scale distribution of gas in the Universe. The gas flowing within the cosmic web, feeding galaxy formation at filament intersections, is shown in purple. Credit: Davide Tornotti/University of Milano-Bicocca/MPA

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