Hidden Universe – Dark Matter & The Mysteries Of The Universes Bubbles – Space Discovery Documentary

Hidden Universe - Dark Matter & The Mysteries Of The Universes Bubbles - Space Discovery Documentary Listen

A livestream from Universe Explore published in Space

What we can see is only a tiny fraction of what exists. To catch the first glimpse of the shadow universe around us, scientists are learning to detect the other stuff: dark matter and dark energy.
IT USED TO be said that cosmologists, the scientists who study the universe as a whole, are “often in error but never in doubt.” Nowadays they’re less often in error, but their doubts have grown as big as all outdoors.
After decades of research involving new and better telescopes, light detectors, and computers, cosmologists can now state with some assurance that the universe was born 13 billion, 820 million years ago, most likely as a bubble of space smaller than an atom. For the first time they’ve mapped the cosmic background radiation—light released when the universe was only 378,000 years old—to an accuracy of better than a tenth of one percent.
But they have also concluded that all the stars and galaxies they see in the sky make up only 5 percent of the observable universe. The invisible majority consists of 27 percent dark matter and 68 percent dark energy. Both of them are mysteries. Dark matter is thought to be responsible for sculpting the glowing sheets and tendrils of galaxies that make up the large-scale structure of the universe—yet nobody knows what it is. Dark energy is even more mysterious; the term, coined to denote whatever is accelerating the rate at which the cosmos expands, has been called a “general label for what we do not know about the large-scale properties of our universe.”
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