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Archive for the ‘cosmology’ category: Page 217

Feb 3, 2022

Astronomers Find First-Ever Rogue Black Hole Adrift in the Milky Way

Posted by in category: cosmology

Weighing in at seven times the mass of our sun, the dark object is by far the best-yet candidate for a free-floating stellar-mass black hole.

Feb 3, 2022

Photographer Captures James Webb Space Telescope Traveling to Orbit

Posted by in categories: cosmology, space travel

Astrophotographer Jason Guenzel managed to capture the James Webb Space Telescope on its journey while it was 1 million kilometers away.

Feb 2, 2022

$323 million in ETH stolen from cross-chain protocol Wormhole

Posted by in categories: blockchains, climatology, cosmology, cryptocurrencies, engineering, environmental, finance

Ben RayfieldWeather control tech exists, to some extent. EMP weapons exist. If there was a 477 mile long lightning, it was probably either due to the sun or is a weapon or a terraforming experiment.

Quinn SenaAuthor.

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Feb 1, 2022

University of Utah’s black hole discovery shines a light on how galaxies are formed

Posted by in category: cosmology

The black hole dubbed B023-G078 is one of the only confirmed intermediate-mass black holes that astronomers have discovered.

Jan 30, 2022

Is spacetime a quantum code?

Posted by in categories: cosmology, quantum physics

In 2014, physicists found evidence of a deep connection between quantum error correction and the nature of space, time and gravity. Generally, gravity is defined as the fabric of space and time but beyond Einstein’s theory, there must be a quantum origin from which the space-time somehow emerges.

The three physicists at the origin of this discovery, Ahmed Almheiri, Xi Dong and Daniel Harlow, suggested that a holographic “emergence” of space-time works just like a quantum error-correcting code. In their paper “Bulk Locality and Quantum Error Correction in AdS/CFT” published in its first version in November 2014, they showed that space-time emerges from this quantum error correction code in an anti-de Sitter (AdS) universes.

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Jan 30, 2022

How Will the Universe End? Scientists Seek an Answer in the Biggest Galaxy Map Yet

Posted by in category: cosmology

The map will help scientists measure the expansion of the universe, shine a light on dark energy, and predict the fate of the cosmos.

Jan 30, 2022

Massless particles can’t be stopped

Posted by in categories: cosmology, particle physics

If a particle has no mass, how can it exist?

Scientists think that, under some circumstances, dark matter could generate powerful enough gravitational waves for equipment like LIGO to detect.

Four physicists share their journeys through academia into industry and offer words of wisdom for those considering making a similar move.

Jan 28, 2022

On this recent Metaverse News Network night, I’m interviewed by the host Richard Mourant and co-host Shauna Lee Lange

Posted by in categories: computing, cosmology, existential risks, physics, singularity, space travel, transhumanism

Topics include the prospects of technological acceleration, Metaverse development and immersive computing, transcendence and cybernetic immortality, neurotechnologies and mind uploading, outer and inner space exploration, Global Mind and phase transition of humanity, physics of time and information, consciousness, evolutionary cybernetics, Chrysalis conjecture and Transcension hypothesis, Artificial General Intelligence and cyberhumanity, transhumanism and singularity, Fermi Paradox, Omega Point cosmology, Cybernetic Theory of Mind, and more. https://www.ecstadelic.net/e_news/metaverse-news-network-liv…x-vikoulov #Metaverse #Singularity #Transhumanism #Transcension #Futurism #Cybernetics #SyntellectHypothesis #AlexVikoulov

Jan 28, 2022

Finally, an Explanation for the Cold Spot in the Cosmic Microwave Background

Posted by in categories: cosmology, particle physics

According to our current Cosmological models, the Universe began with a Big Bang roughly 13.8 billion years ago. During the earliest periods, the Universe was permeated by an opaque cloud of hot plasma, preventing atoms from forming. About 380,000 years later, the Universe cooled to a temperature of about-270 °C (−454 °F), which converted much of the energy generated by the Big Bang into light. This afterglow is now visible to astronomers as the Cosmic Microwave Background (CMB), first observed during the 1960s.

One peculiar characteristic about the CMB that attracted a lot of attention was the tiny fluctuations in temperature, which could provide information about the early Universe. In particular, there is a rather large spot in the CMB that is cooler than the surrounding afterglow, known as the CMB Cold Spot. After decades of studying the CMB’s temperature fluctuations, a team of scientists recently confirmed the existence of the largest cold spots in the CMB afterglow – the Eridanus Supervoid – might be the explanation for the CMB Cold Spot that astronomers have been looking for!

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Jan 27, 2022

Scientists make a new type of optical device using alumina

Posted by in categories: cosmology, physics

Scientists from the Kavli Institute for the Physics and Mathematics of the Universe and the University of Minnesota, Tomotake Matsumura and Shaul Hanany, and their collaborators have made a new type of optical element that will improve the performance of telescopes studying radiation from the Big Bang.

The (CMB) is a relic radiation remnant from the big bang. It reaches our telescopes after traveling 14 billion years since the birth of the Universe. Studying the properties of this radiation, scientists infer the physics of the , how clusters of galaxies form, and the matter and energy content in the Universe. Four Nobel prizes have been awarded for past studies of the CMB.

To study the CMB, telescopes must be tuned to wavelengths in which it is most intense, about 1–3 mm, and they must separate out shorter wavelength radiation that the atmosphere and Milky Way emit. Among the most effective optical elements that absorbs the short wavelength radiation but lets the CMB pass through is alumina, a material made of aluminum and oxygen and that is second in hardness only to diamond. One challenge with using alumina is that it also reflects almost 50% of the radiation impinging on it. Matsumura and Hanany have now come up with a new way to fabricate anti-reflective structures that reduce reflections fifty-fold.