dark matter

The image shows diffuse gas (yellow to purple) contained within the cosmic filament connecting two galaxies (yellow stars), and extending over three million light-years. Credit: Davide Tornotti/University of Milano-Bicocca

Astronomers recently found a three-million-light-year connection between galaxies

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A new breakthrough in cosmic mapping has revealed the structure of a giant filament, part of a vast cosmic web that connects galaxies.
To mark the 100th anniversary of Edwin Hubble’s discovery of a Cepheid variable star, named V1, in the neighboring Andromeda galaxy, astronomers collaborated with the American Association of Variable Star Observers (AAVSO) to study the star. AAVSO observers followed V1 for six months, creating a graph—or light curve—that records the star’s periodic rise and fall in brightness. Based on this data, the Hubble Space Telescope was scheduled to observe the star during its weakest and brightest hours. Credit: NASA, ESA, Hubble Heritage Project (STScI, AURA), Robert Gendler.

The star that proved the universe is bigger than we imagined

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A century ago, Edwin Hubble's discovery of the variable star V1 in the Andromeda Galaxy revealed a vast, expanding universe, becoming a turning point in our understanding of the cosmos.
A model of accretion on a disc-shaped galaxy. Color represents the temperature of the gas, and the black lines the flow lines of the gas, when it flows from the hot galactic surrounding medium (about a million degrees) to the galaxy where the gas is relatively cold (about 10,000 degrees). The right panel shows three streamlines in 170D, which highlight the swirling of the gas during the inflow. The top image is a Hubble Space Telescope image of a relatively nearby disk galaxy. Its diameter is about 21 thousand light years, and its distance from us is about XNUMX million light years.

on galactic dynamics

What can be learned from the shape of galaxies about the complex connections between different materials in the universe
A picture of the three red monsters taken by Webb. Credit: NASA/CSA/ESA, M. Xiao & PA Oesch (University of Geneva), G. Brammer (Niels Bohr Institute), Dawn JWST Archive

"Red monsters" from the cosmic dawn: discoveries that challenge models of galaxy formation

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The time travel of the James Webb Space Telescope. Photo: NASA

A bright surprise in the early universe: new discoveries from the James Webb Space Telescope

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Among the impressive achievements of the telescope is the detection of very early galaxies, which developed only about 300 million years after the Big Bang
This all-sky view is a layering of the Gaia star map from its second data release in 2018 and the Planck dust map from 2014. Credit: ESA/Euclid/Euclid Consortium/NASA; ESA/Gaia/DPAC; ESA/Planck Collaboration

Euclid's 'Dark Universe' telescope reveals stunning 208-gigapixel window into the cosmos

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Using gravitational insolation, the Euclid mission looks into the dark world, maps the distribution of dark matter and studies the expansion of the universe by observing billions of galaxies
An artist's illustration depicts a primordial black hole (left) speeding across the surface of Mars and causing a slight "tremor" in Mars' orbit (right), with the sun in the background. Scientists from MIT claim that such a tremor may be detectable with the instruments available today. Credit: Illustration by Benjamin Lehmann, used with SpaceEngine @ Cosmographic Software LLC.

Dark matter: primordial black holes and the mysterious wobble of Mars' orbit

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These holes, which are theoretical remnants of the early universe, may be detectable every decade as they pass through the solar system, offering a new way to study the elusive dark matter

Astronomers have discovered potential dark matter objects in space using pulsars

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These pulsars—neutron stars that rotate and emit beacon-like beams of radio waves that scan space—have been used to detect mysterious hidden masses.
Computer simulations made by astronomers, including those at the University of California at Irvine, support the existence of dark matter. Although dark matter has not been directly detected, many scientists believe it must exist to explain various phenomena in the observable universe.

Properties of galaxies reveal the invisible hand of dark matter

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Astronomical computer simulations point to strong evidence that dark matter exists, supported by observations of features in galaxies that are hard to explain without it
The Xenon top array detector array of the XENONnT partnership. PR photo

The international XENONnT experiment: first measurement of nuclear recoil from solar neutrinos

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Prof. Rani Bodnik from the Department of Particle Physics and Astrophysics at the Weizmann Institute of Science is a partner in this research, and among other things built the control and calibration systems and took part in the data analysis
An illustration of gravity. Illustration: depositphotos.com

Could gravity exist without mass, thus reducing the need for the hypothetical dark matter

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Scientists say that circular systems of topological structural defects common throughout the universe may be the source of the "excess" gravity needed to hold a galaxy or cluster together.
The early universe immediately after the big bang, with a chaotic background of energy and particles. Small, dense black holes, some the size of an atom, are scattered throughout the image. These black holes are described with a "color charge" aura, symbolizing the unique property of quarks and gluons. Around the black holes is a cosmic landscape of quark-gluon plasma, with hints of the beginnings of proton and neutron formation. The image was prepared using DALEE and is not a scientific image

Exotic black holes may be a byproduct of dark matter

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Fifty years ago, physicist Stephen Hawking proposed that dark matter might be a population of black holes, which may have formed shortly after the Big Bang. They also existed for a short time but had an impact on
Infographic: the history of the universe. Credit: NASA

Artificial intelligence seeks to solve the dark energy problem

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This is according to the Dark Energy Survey Partnership, of which University College London is a founding member, hosts the Fermi National Accelerator Laboratory in the United States and includes more than 400 scientists from 25 institutions in 7 countries
Simulations of the unbalanced galaxy and dark matter dynamics. The image represents the galaxy, surrounded by dark matter particles, with an excess dense region behind it, regions in the background that symbolize empty and dense regions in the universe, and signs of the movement of the galaxy and the effect of dynamic friction. The image was prepared with the help of artificial intelligence for the purpose of illustration and should not be seen as a scientific image

Cracking the secrets of dark matter using warped galaxies

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Researchers measure the speed and mass of dark matter by studying warped galaxies affected by dynamic friction caused by dark matter
Harvard astronomers claim that the Milky Way's warped shape is due to an unbalanced halo of dark matter. This claim supports theories of a previous galactic collision and provides insights into the nature of dark matter. Credit: Stefan Payne-Wardenaar; Magellanic Clouds: Robert Gendler/ESO

Dark matter and galactic collisions: Harvard astronomers explain the mysterious curvature of the Milky Way

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The cause of this is a distorted dark matter halo
In Ellipse: The Dark Age of the Universe. Illustration: depositphotos.com

Radio waves from the moon will shed light on the early universe

About 50 million years after the big bang, we will be able to measure the evolution of the universe and its composition by measuring radio waves from the moon

The beginning of the universe in the eyes of science

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A special article in honor of Hebrew new year summarizing the creation of the world through the lens of science
wormhole Photo: depositphotos.com

Researchers from Germany: dark matter and the problem of hierarchy explained with the help of a fifth dimension

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Researchers around the world are looking for an explanation for the mystery of dark matter and the problem of hierarchy. The two problems seem completely different, but according to researchers from Johns Gutenberg University in Germany, both can be solved with the help of a compact fifth dimension.
The heart of the detector in the "Xenon 1 Ton" experiment. The world's most sensitive to dark matter

The scientists of the "Xenon 1 Ton" experiment identified a larger than expected amount of events that may indicate the existence of new physics

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A new model for dark matter and energy unifies the two

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The search for the dark quark

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Deep in the ground: the detector is in a tunnel under Mount Gran Sasso in Italy. Photo courtesy of the Weizmann Institute

"Xenon 1 ton": setting a new limit for dark matter

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A pattern of radio waves in the sky created by the combination of radiation from the first stars and the influence of dark matter. The blue regions are those where the dark matter has supercooled the normal matter. Source: Prof. Renan Barkana.

Israeli research has found the first tangible proof of the existence of dark matter in the universe

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Simulation of the merger of two black holes, the existence of which was indicated by the gravitational waves recorded by LIGO in 2017. Source: The SXS (Simulating eXtreme Spacetimes) Project.

Is dark matter made of black holes?

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Particle detector (the photo in the article is the CMS particle detector at CERN. Source: Julian Knutzen.

A particle detector will be built at Ben-Gurion University

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Dark matter "bridges" between galaxies. Photo: University of Waterloo

First visualization of the dark matter network that connects galaxies

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Simulation of astronauts on Mars, according to SpaceX's vision to colonize the planet. Source: SpaceX.

Twenty big questions about the future of humanity

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A simulation of the Milky Way galaxy. The blue halo around it comes to illustrate the estimated distribution of the dark matter around the galaxy. Source: ESO/L. Calçada.

Probing in the dark for dark matter

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Robin together with Kent Ford examining the equipment at the Lowell Observatory in 1965. Source: Carnegie Institution, Department of Terrestrial Magnetism.

The woman behind dark matter

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An illustration of Garfield the cat pondering the idea of ​​lasagna in space. Invisible noodle-shaped structures, lazania leaves or hazelnut shells may be floating in the milky way. Could it be the dark matter we've been searching for for years?© GARFIELD: Paws. Used by permission. Art by CSIRO

Dark matter "noodles" may be hiding in the milky way

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Scientists in uniform work on the Xenon 1 ton TPC. Photo: PR

The goal: to solve the mystery of dark matter

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Colliding galaxies in the cluster Obel 3827. Courtesy of the European Southern Observatory (ESO), NASA and the European Space Agency/Hubble Space Telescope

Dark matter throws a clue / Clara Moskowitz

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The Milky Way. Illustration: shutterstock

Raise the screen over a galaxy composed of dark matter

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The first map of the Dark Energy Survey traces the distribution of dark matter over a large region of the sky. The colors describe the effective mass density. (Image: Dark Energy Survey)

Scientists have mapped the dark matter around millions of galaxies

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Comet Siding Spring as it might have been seen from Mars. Figure: Indian Space Agency

Summary of the year 2014 Part II - Astronomy and astrophysics: a rare meeting between Mars and the comet 'Ben David' of the Earth and a supercluster

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Credit: "Characterization of a Gamma-ray Signal from the Center of the Milky Way: A Compelling Example of Dark Matter Ionization," by Tenso Dillan and colleagues, Online Early Version, 26 February 2014: HTTP://ARXIV.ORG/ABS/1402.6703

Dark matter - a glimpse into the invisible / Clara Moskowitz

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Prof. Eli Waxman. Cosmic radiation

How are positrons created in space? When, where and how do they advance in the galaxy?

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AMS Alpha Magnetic Spectrometer facility of the type installed on the International Space Station. From Wikipedia

Scientists: first evidence of the existence of dark matter has been discovered

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Mapping the location and movement of galaxies at a distance of up to 370 million light years from Earth according to a model that incorporates artificial intelligence developed at the Leibniz Institute for Astrophysics in Germany

Artificial intelligence helped map out the structure of the universe

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Landmarks in the expansion of the universe. From Wikipedia

Is there anything that can move faster than the speed of light?

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An observation showing that the dark matter in the universe is divided in the form of a network of dense (white) and empty (black) regions. The largest white areas are the size of the full moon in the sky. Photo: van Weerbeek, Hymans and CFHTLenS partners

Astronomers measured the concentration of dark matter about 6 billion years ago

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The hunt for the dark matter XENON 100 Photo: Scientific American

Particles in the dark

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Illustration of the distribution of dark matter in the universe, 800 million years after the big bang. Figure: The Marenostrum Numerical Cosmology Project

The mode of cosmological evolution of dark matter is the same as that of visible matter

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Dark matter: a photograph of a galaxy cluster in visible light, combined with an X-ray photograph

Scientists from the Weizmann Institute of Science participated in the development of a method that might help in measuring dark matter

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Prof. Donald Linden-Bell

Astrophysicist Donald Linden-Bell will receive an honorary doctorate from the Hebrew University

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The scattering of galaxies up to a distance of 3.5 billion light-years, from a scan conducted by the Sloan digital sky survey. Photo: University of California at Berkeley

Einstein's theory of general relativity and the existence of dark matter have been proven up to a distance of 3.5 billion light years

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Prof. Mordechai Milgrom. change the law Photo: Weizmann Institute

Twin universes

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Dark matter detector

There is still no certainty whether the dark matter was found in the mine in Minnesota

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Artist's rendering of the spiral structure of the Milky Way. From Wikipedia

How galaxies form: astronomers explain the Hubble classification

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Researchers are still in the dark after the results of an experiment to detect dark matter were inconclusive

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