An astrophotographer captured the ISS crossing the Sun as two astronauts were conducting a spacewalk to install solar panels.
Category: cosmology – Page 211
Controversial claim from Nobel Prize winner: The universe keeps dying and being reborn
Editor’s note: For a more mainstream assessment of this idea, see this article by Dr. Ethan Siegel.
Sir Roger Penrose, a mathematician and physicist from the University of Oxford who shared the Nobel Prize in physics in 2020, claims our universe has gone through multiple Big Bangs, with another one coming in our future.
Penrose received the Nobel for his working out mathematical methods that proved and expanded Albert Einstein’s general theory of relativity, and for his discoveries on black holes, which showed how objects that become too dense undergo gravitational collapse into singularities – points of infinite mass.
The Cosmic Connectome: Our Universe is a Giant Brain, According to Scientists
A new research at the intersection of cosmology and neurobiology implies that diverse physical processes lead to similar levels of complexity and self-organization present in structures of scales.
An astrophysicist at the University of Bologna and a neurosurgeon at the University of Verona compared the network of neuronal cells in the human brain with the cosmic network of galaxies and found astounding similarities.
In their paper ‘The quantitative comparison between the neuronal network and the cosmic web’ published in Frontiers in Physics, Franco Vazza, astrophysicist at the University of Bologna, and Alberto Feletti, neurosurgeon at the University of Verona, investigated the similarities between two of the most complex systems in existence: the cosmic web of galactic superclusters and the network of neuronal cells in the human brain.
NASA’s Webb Proves Galaxies Transformed the Early Universe
Cave divers equipped with brilliant headlamps often explore cavities in rock less than a mile beneath our feet. It’s easy to be wholly unaware of these cave systems – even if you sit in a meadow above them – because the rock between you and the spelunkers prevents light from their headlamps from disturbing the idyllic afternoon.
Apply this vision to the conditions in the early universe, but switch from a focus on rock to gas. Only a few hundred million years after the big bang, the cosmos was brimming with opaque hydrogen gas that trapped light at some wavelengths from stars and galaxies. Over the first billion years, the gas became fully transparent – allowing the light to travel freely. Researchers have long sought definitive evidence to explain this flip.
New data from the James Webb Space Telescope recently pinpointed the answer using a set of galaxies that existed when the universe was only 900 million years old. Stars in these galaxies emitted enough light to ionize and heat the gas around them, forming huge, transparent “bubbles.” Eventually, those bubbles met and merged, leading to today’s clear and expansive views.
Dark matter atoms may form shadowy galaxies with rapid star formation
Dark matter, the invisible material that makes up the vast majority of the universe’s mass, may collect itself to form atoms, a new simulation shows.
Those “dark atoms” might radically alter the evolution of galaxies and the formation of stars, giving astronomers a new opportunity to understand this mysterious substance.
“It’s a Black hole!” James Webb Telescope Discovers 45,000+ Galaxies at the Edge of the Universe!
“The Universe Came From a Black Hole” String Theory Founder Reveals James Webb Telescope’s New Image. Deep within dense star clusters, something extraordinary dwells: Stars. But these, are no ordinary stars, but colossal celestial beings, known as supermassive stars. And now, their existence has been unveiled by the piercing gaze of the James Webb Space Telescope.
According to the standard model of cosmology, after the universe came out of the big bang, it took between 500 million to 1 billion years for the first stars to form. That however, is changing.
We are not just finding single stars, but clusters of them in the early universe and that, has the whole scientific community stunned.
#space #jameswebbspacetelescope #nasa.
0:00 Stars in Globular Clusters.
2:24 The Abundance Anomalies.
3:55 Most Ancient and Distant Galaxies.
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