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First dark matter search using WINERED spectrograph sets new lifetime constraints

Dark matter is an elusive type of matter that does not emit, absorb or reflect light and is thus impossible to detect using conventional techniques employed in particle physics. In recent years, groups of physicists worldwide have been trying to observe this matter indirectly using advanced detectors and equipment, by detecting signals other than electromagnetic radiation that could be linked to its activity or interactions with other matter.

Researchers at Tokyo Metropolitan University, PhotoCross Co. Ltd, Kyoto Sangyo University and other collaborating institutions recently released the findings of the first search for dark matter that relied on data collected by WINERED, a near-infrared and high-dispersion spectrograph mounted on a in Chile.

Their paper, published in Physical Review Letters, sets the most stringent constraints to date on the lifetime of dark matter particles with masses between 1.8 and 2.7 eV.

Breakthrough AI Reveals the Universe’s Hidden Signals

A new AI-driven tool allows scientists to analyze vast amounts of LIGO

LIGO, or the Laser Interferometer Gravitational-Wave Observatory, is a large-scale physics experiment and observatory to detect cosmic gravitational waves and to develop gravitational-wave observations as an astronomical tool. There are two LIGO observatories in the United States—one in Hanford, Washington, and the other in Livingston, Louisiana. These observatories use laser interferometry to measure the minute ripples in spacetime caused by passing gravitational waves from cosmic events, such as the collisions of black holes or neutron stars.

No More Singularities? Quantum Gravity Could Finally Solve the Black Hole Mystery

A black hole is a place in space where the gravitational field is so strong that not even light can escape it. Astronomers classify black holes into three categories by size: miniature, stellar, and supermassive black holes. Miniature black holes could have a mass smaller than our Sun and supermassive black holes could have a mass equivalent to billions of our Sun.

New Maps of the Bizarre, Chaotic Space-Time Inside Black Holes

In the late 1960s, physicists like Charles Misner proposed that the regions surrounding singularities—points of infinite density at the centers of black holes—might exhibit chaotic behavior, with space and time undergoing erratic contractions and expansions. This concept, termed the “Mixmaster universe,” suggested that an astronaut venturing into such a black hole would experience a tumultuous mixing of their body parts, akin to the action of a kitchen mixer.

S general theory of relativity, which describes the gravitational dynamics of black holes, employs complex mathematical formulations that intertwine multiple equations. Historically, researchers like Misner introduced simplifying assumptions to make these equations more tractable. However, even with these assumptions, the computational tools of the time were insufficient to fully explore the chaotic nature of these regions, leading to a decline in related research. + Recently, advancements in mathematical techniques and computational power have reignited interest in studying the chaotic environments near singularities. Physicists aim to validate the earlier approximations made by Misner and others, ensuring they accurately reflect the predictions of Einsteinian gravity. Moreover, by delving deeper into the extreme conditions near singularities, researchers hope to bridge the gap between general relativity and quantum mechanics, potentially leading to a unified theory of quantum gravity.

Understanding the intricate and chaotic space-time near black hole singularities not only challenges our current physical theories but also promises to shed light on the fundamental nature of space and time themselves.


Physicists hope that understanding the churning region near singularities might help them reconcile gravity and quantum mechanics.

The Big Bang: A Cosmic Encore? Exploring the Possibility of Rebirth

In this fascinating exploration of cosmic mysteries, we delve into the question: Will the Big Bang happen again? Join us as we investigate the theories surrounding the universe’s origin, expansion, and potential future. We’ll cover concepts like the cyclic model, eternal inflation, and how quantum physics plays a role in the fate of the universe. Get ready for mind-bending theories and thought-provoking answers that could change your understanding of space and time! If you enjoyed this cosmic journey, please like and share the video with fellow space enthusiasts.

#BigBang #CosmicMysteries #Universe #Astronomy #SpaceExploration #TheoreticalPhysics.

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Why are ‘fireworks’ coming from a black hole? This is what scientists say

A supermassive black hole in the center of the Milky Way galaxy is creating a light show that’s intriguing astronomers.

Flares of light have been observed in a disk orbiting the black hole Sagittarius A*, according to a team of astrophysicists studying the black hole who published their findings Tuesday in The Astrophysical Journal Letters. Known as an accretion disk, it’s hot, contains a steady flow of materials like gas or plasma, and flickers constantly. The disks emit light that can be detected using infrared and X-ray instruments, which helps astronomers better observe the black holes the disks orbit.

Astronomers Just Unveiled 3,628 Supernovae That Could Rewrite Cosmic History

A massive dataset of 3,628 Type Ia Supernovae from the Zwicky Transient Facility is being released, offering new insights into cosmic expansion.

This unprecedented collection will refine how cosmologists measure distances and study dark energy. With high-precision data from cutting-edge telescopes, scientists aim to resolve discrepancies in the standard cosmological model and explore new physics.

A Game-Changing Dataset for Cosmology.

Astronomers Just Found a 3-Million-Light-Year Connection Between Galaxies

A new breakthrough in cosmic mapping has unveiled the structure of a colossal filament, part of the vast cosmic web that connects galaxies.

Dark matter and gas shape these filaments, but their faint glow makes them hard to detect. By using advanced telescope technology and hundreds of hours of observation, astronomers have captured the most detailed image yet, bringing us closer to decoding the evolution of galaxies and the hidden forces shaping the universe.

The hidden order of the universe.

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