Lifeboat Foundation: Safeguarding Humanity
Toggle light / dark theme

Blog

Category: cosmology – Page 8

Earth rotates, the Sun rotates, the Milky Way rotates – and a new model suggests the entire Universe could be rotating. If confirmed, it could ease a significant tension in cosmology.

The Universe is expanding, but exactly how fast is a contentious question. Two different methods of measurement return two very different speeds – and as the measurements become more precise, each becomes more certain. This discrepancy is known as the Hubble tension, and it’s reaching crisis levels in physics.

So for a new study, physicists in Hungary and the US added a small rotation to a model of the Universe – and this mathematical massage seemed to quickly ease the tension.

Read more | >

In the realm of general relativity, black holes are well-known for their ability to trap light and matter by bending spacetime, creating a point of no return. While black holes have fascinated scientists and the public alike, another concept, the white hole, has remained more theoretical. A white hole is thought to be the reverse of a black hole, expelling light and matter rather than absorbing them. Now, a team of researchers has designed a novel optical device with intriguing similarities with both these elusive cosmic phenomena.

The device, reported in Advanced Photonics, functions as an optical black hole or optical white hole, and rests on a principle known as “coherent perfect absorption” of light waves. Dependent on polarization, this optical device can either absorb or reject light almost entirely, analogous to the behavior of a gravitational black or white hole in space.

The device works by forming a from incident light waves, where interactions with an ultrathin absorber lead to perfect absorption or transmission, based on the polarization of the light. In simple terms, it behaves like a cosmic object that either swallows or repels light.

Read more | >

CERN scientists have detected top quark pairs in lead-lead collisions for the first time, confirming their presence in the early universe’s quark-gluon plasma. This groundbreaking discovery unlocks new insights into how matter formed just microseconds after the Big Bang. Join us as we explore the science, history, and future implications of this monumental finding.

Paper link : https://arxiv.org/pdf/2411.10186
paper link : https://arxiv.org/pdf/0810.5529
paper link : https://arxiv.org/pdf/2005.

Visit our website for up-to-the-minute updates:
www.nasaspacenews.com.

Follow us.
Facebook: https://www.facebook.com/nasaspacenews.
Twitter: https://twitter.com/SpacenewsNasa.

Join this channel to get access to these perks:
https://www.youtube.com/channel/UCEuhsgmcQRbtfiz8KMfYwIQ/join.

#NSN #NASA #Astronomy#TopQuark.

Continue reading “Physicists Shock the World: Top Quark Discovery Sheds Light on the Universe’s First Moments” | >

Extreme cosmic events such as colliding black holes or the explosions of stars can cause ripples in spacetime, so-called gravitational waves. Their discovery opened a new window into the universe. To observe them, ultra-precise detectors are required, but designing them remains a major scientific challenge for humans.

Researchers at the Max Planck Institute for the Science of Light (MPL) have been working on how an artificial intelligence system could explore an unimaginably vast space of possible designs to find entirely new solutions. The results were recently published in the journal Physical Review X.

More than a century ago, Einstein theoretically predicted gravitational waves. They could only be directly detected in 2016 because the development of the necessary detectors was extremely complex.

Read more | >

Win Extraterrestrial Metal: join my mailing list 💥 https://briankeating.com/yt 💥

Could entropy and coherence change everything we know about the universe? How does quantum information flow in the cosmic superweb? And will quantum mechanics reveal our universe’s deepest secrets?

Today, I’m joined by the one and only Dick Bond, a theorist who has helped reshape our understanding of dark matter, entropy, and quantum mechanics, to discuss how every aspect of the universe could be a result of quantum mechanics. Dick is a renowned astrophysicist known for his significant contributions to cosmology and the study of the universe’s large-scale structure. He has worked extensively on topics such as dark matter, dark energy, the cosmic microwave background (CMB), and quantum cosmology.

We also have a treat for you at the end of the episode, as Dick will grace us with a lecture titled Entropy in a Coherent Universe: Quantum Information Flows in the Cosmic SuperWeb. Don’t miss out!

Key Takeaways:

00:00 Intro.

Continue reading “Entropy and Coherence Could Change Everything We Know About the Universe! w/ Dick Bond” | >

Neutrinos are among the most enigmatic particles in the universe. They are omnipresent yet interact extremely rarely with matter.

In cosmology, they influence the formation of large-scale galaxy structures, while in , their minuscule mass serves as an indicator of previously unknown physical processes. Precisely measuring the neutrino mass is therefore essential for a complete understanding of the fundamental laws of nature.

This is precisely where the KATRIN experiment with its international partners comes into play. KATRIN utilizes the beta decay of tritium, an unstable hydrogen isotope, to assess the mass of neutrinos. The energy distribution of the electrons resulting from the decay enables a direct kinematic determination of the neutrino mass.

Read more | >

Neutrinos, the mysterious and nearly massless particles that barely interact with anything, are revealing new secrets through the KATRIN experiment.

Using tritium decay and advanced spectrometry, KATRIN has slashed the upper limit on neutrino mass, pushing our understanding of fundamental physics into new territory. With 250 days of data already analyzed and more to come, researchers are optimistic about uncovering even more surprises. Future upgrades aim to detect hypothetical sterile neutrinos, potential dark matter candidates, and possibly revolutionize our view of the universe’s invisible side.

Neutrinos: The Universe’s Ghost Particles.

Read more | >

Astronomers tallying up all the normal matter—stars, galaxies and gas—in the universe today have come up embarrassingly short of the total matter produced in the Big Bang 13.6 billion years ago. In fact, more than half of normal matter—half of the 15% of the universe’s matter that is not dark matter—cannot be accounted for in the glowing stars and gas we see.

New measurements, however, seem to have found this missing matter in the form of very diffuse and invisible ionized hydrogen gas, which forms a halo around galaxies and is more puffed out and extensive than astronomers thought.

The findings not only relieve a conflict between astronomical observations and the best, proven model of the evolution of the universe since the Big Bang, they also suggest that the massive black holes at the centers of galaxies are more active than previously thought, fountaining gas much farther from the than expected—about five times farther, the team found.

Read more | >

Using the unique infrared sensitivity of NASA’s James Webb Space Telescope, researchers can examine ancient galaxies to probe secrets of the early universe. Now, an international team of astronomers has identified bright hydrogen emission from a galaxy in an unexpectedly early time in the universe’s history. The surprise finding is challenging researchers to explain how this light could have pierced the thick fog of neutral hydrogen that filled space at that time.

The Webb telescope discovered the incredibly distant galaxy JADES-GS-z13-1, observed to exist just 330 million years after the big bang, in images taken by Webb’s NIRCam (Near-Infrared Camera) as part of the James Webb Space Telescope Advanced Deep Extragalactic Survey (JADES). Researchers used the galaxy’s brightness in different infrared filters to estimate its redshift, which measures a galaxy’s distance from Earth based on how its light has been stretched out during its journey through expanding space.

Read more | >