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Archive for the ‘cosmology’ category: Page 14

Aug 25, 2024

Dark electrons discovered in solids in superconductor breakthrough

Posted by in categories: cosmology, quantum physics

Dark energy is not limited to outer space, many solid materials around us also contain electrons hidden in dark states.

Until now scientists believed that dark electrons, electrons associated with the quantum state of matter, simply don’t exist in solid materials.

However, a new study from…

Continue reading “Dark electrons discovered in solids in superconductor breakthrough” »

Aug 23, 2024

Unlocking the Universe With AI and Next-Gen Telescopes

Posted by in categories: cosmology, physics, robotics/AI

Modern astrophysics has enabled scientists to observe the universe with unprecedented clarity, from exoplanets to entire galaxies.

Despite our galaxy blocking some views, advanced tools like the James Webb Space Telescope and upcoming projects such as the Square Kilometre Array are pushing the boundaries of our cosmic understanding. Visualization techniques help researchers explore the universe in both space and time, revealing phenomena like fast radio bursts. Looking ahead, scientists hope to capture images of distant exoplanets and unravel mysteries such as dark energy and the expansion of the universe.

Observing the universe: from exoplanets to galaxies.

Aug 22, 2024

Dark Energy Camera probes the Coma Cluster, an inspiration for the theory of dark matter

Posted by in categories: cosmology, electronics

The Dark Energy Camera has captured an image of the dazzling Coma Cluster, named after the hair of Queen Berenice II of Egypt. Not only significant in Greek mythology, this collection of galaxies was also fundamental to the discovery of the existence of dark matter.

Aug 22, 2024

Expansion of the Universe Explained | Cosmology 101 Episode 1

Posted by in categories: cosmology, physics

In this episode of Cosmology 101, we dive into the concept of an expanding universe. From the first moments of the Big Bang, our cosmos has been stretching in every direction. We explore what this expansion means for us, how we know it’s happening, and the fascinating implications of living in an ever-growing universe.

Join Katie Mack, Perimeter Institute’s Hawking Chair in Cosmology and Science Communication, on an incredible journey through the cosmos in our new series, Cosmology 101.

Continue reading “Expansion of the Universe Explained | Cosmology 101 Episode 1” »

Aug 22, 2024

Multiverse as an Ensemble of Stable and Unstable Universes

Posted by in categories: cosmology, particle physics, quantum physics

Read the paper published in our journal Symmetry:, which has been viewed many times, authored by Krzysztof Urbanowski (Uniwersytet Zielonogórski)


Estimates of the Higgs and top quark masses, mH≃125.10±0.14 [GeV] and mt≃172.76±0.30[GeV], based on the experimental result place the Standard Model in the region of the metastable vacuum. A consequence of the metastability of the Higgs vacuum is that it should induce the decay of the electroweak vacuum in the early Universe with catastrophic consequences. It may happen that certain universes were lucky enough to survive the time of canonical decay, that is the exponential decay, and live longer. This means that it is reasonable to analyze conditions allowing for that. We analyze the properties of an ensemble of universes with unstable vacua considered as an ensemble of unstable systems from the point of view of the quantum theory of unstable states. We found some symmetry relations for quantities characterizing the metastable state.

Aug 21, 2024

Mathematicians Prove Hawking Wrong About ‘Extremal’ Black Holes

Posted by in categories: cosmology, mathematics

For decades, extremal black holes were considered mathematically impossible. A new proof reveals otherwise.

Aug 21, 2024

Astronomers Discover Record-Breaking Twin Quasars in the Early Universe

Posted by in categories: cosmology, evolution, particle physics

Astronomers have identified the earliest pair of quasars, shining 900 million years post-Big Bang, revealing insights into galaxy mergers and the reionization era of the Universe.

An international team of astronomers, including members from the Kavli Institute for the Physics and Mathematics of the Universe (Kavli IPMU, WPI), has discovered the earliest known pair of quasars using the Subaru Telescope and Gemini North telescope, both situated on Maunakea in Hawai’i. These quasars, powered by actively feeding supermassive black holes, emit intense radiation. This significant discovery will provide insights into the early evolution of the Universe.

About 400 million to 1 billion years after the Big Bang, something, possibly a combination of sources, unleashed enough radiation to strip the electrons from most of the hydrogen atoms, completely altering the nature of the Universe. Quasars are one potential source of the radiation that caused this “reionization” of the Universe. When matter falls into the supermassive black hole at the center of a galaxy, the matter heats up and releases radiation in a phenomenon known as a quasar.

Aug 20, 2024

Next-Gen Spectroscopy: New Tunable Laser Method Achieves Unprecedented Precision

Posted by in categories: computing, cosmology, particle physics

Innovative diode laser spectroscopy provides precise monitoring of the color changes in the sweeping laser at each moment, establishing new benchmarks for frequency metrology and practical applications.

Since the laser’s debut in the 1960s, laser spectroscopy has evolved into a crucial technique for investigating the intricate structures and behaviors of atoms and molecules. Advances in laser technology have significantly expanded its potential. Laser spectroscopy primarily consists of two key types: frequency comb-based laser spectroscopy and tunable continuous-wave (CW) laser spectroscopy.

Comb-based laser spectroscopy enables extremely precise frequency measurements, with an accuracy of up to 18 digits. This remarkable precision led to a Nobel Prize in Physics in 2005 and has applications in optical clocks, gravity sensing, and the search for dark matter. Frequency combs also enable high-precision, high-speed broadband spectroscopy because they combine large bandwidth with high spectral resolution.

Aug 20, 2024

Waning Dark Energy May Evade ‘Swampland’ of Impossible Universes

Posted by in categories: cosmology, physics

The mysterious case of dark energy and the universe’s fate.

Imagine the universe as a vast, ever-expanding balloon.


The largest-ever 3D map of the cosmos hints that the dark energy that’s fueling the universe’s expansion may be weakening. One community of theoretical physicists expected as much.

Continue reading “Waning Dark Energy May Evade ‘Swampland’ of Impossible Universes” »

Aug 20, 2024

Something Is Wrong with Dark Energy, Physicists Say

Posted by in categories: cosmology, physics

Cosmic surveys suggest the force pulling the universe apart might not be constant after all.

By Rebecca Boyle

Imagine sitting in the center of a firework that has just exploded. After the first flash of light and heat, sparks fly off in all directions, with some streaming together into fiery filaments and others fading quickly into cold, ashy oblivion. After a moment more, the smoke is all that remains—the echo, if you will, of the firework’s big bang.

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