Tag Archive for 'Dark energy'

This artist’s impression shows the evolution of the Universe beginning with the Big Bang on the left followed by the appearance of the Cosmic Microwave Background. The formation of the first stars ends the cosmic dark ages, followed by the formation of galaxies. Image credit: M. Weiss / Harvard-Smithsonian Center for Astrophysics.

Gravity is Result of Computational Process within Our Universe, Physicist Says

Apr 28, 2025 by News Staff

University of Portsmouth physicist Melvin Vopson proposes a new way to think about gravity — not just as a pull, but as something that happens when...

Dark Energy Survey Supports Theory of Evolving Dark Energy

Mar 19, 2025 by News Staff

The Lambda-CDM (ΛCDM) model has been the foundation of modern cosmology for some time now, successfully describing large-scale structures in the Universe....

Two ‘fans’ corresponding to the two main areas DESI has observed, above and below the plane of our Milky Way Galaxy. Image credit: DESI Collaboration / DOE / KPNO / NOIRLab / NSF / AURA / R. Proctor.

Dark Energy Might Be Evolving over Time in Unexpected Ways

Mar 19, 2025 by News Staff

New results from the DESI (Dark Energy Spectroscopic Instrument) Collaboration have revealed signs of a time-varying dark energy. Two ‘fans’ corresponding...

An artist’s rendition of a giant star in orbit around a low-mass black hole. Image credit: Sci-News.com.

Black Hole Singularity Could Represent New Beginning: Study

Mar 12, 2025 by News Staff

Black holes may transition into white holes, ejecting matter and even time back into the Universe, according to a new study by physicists from the University...

Artistic impression of a Multiverse. Image credit: Jaime Salcido / EAGLE Collaboration.

New Theoretical Model Calculates Chances of Intelligent Life in Our Universe and Beyond

Nov 13, 2024 by News Staff

In 1961, American astrophysicist and astrobiologist Dr. Frank Drake devised an equation in which several factors are multiplied together to estimate the...

A view of the accretion disk around the supermassive black hole, with jet-like structures flowing away from the disk. The extreme mass of the black hole bends spacetime, allowing the far side of the accretion disc to be seen as an image above and below the black hole. Image credit: Science Communication Lab, DESY.

DESI Searching for Evidence of Dark Energy from Black Holes

Oct 28, 2024 by News Staff

According to the prevailing inflationary universe theory, at the very beginning of the Big Bang, a mysterious energy drove an exponential expansion of...

ESA’s Euclid spacecraft will orbit the second Lagrange point (L2), 1.5 million km from Earth in the opposite direction to the Sun. L2 is an equilibrium point of the Sun-Earth system that follows Earth around the Sun. In its orbit at L2, Euclid’s sunshield can always block the light from the Sun, Earth and Moon while pointing its telescope towards deep space, ensuring a high level of stability for its instruments. At L2, Euclid joins ESA’s Gaia mission and the ESA/NASA/CSA James Webb Space Telescope, which are also orbiting around this equilibrium point, each following well separated trajectories. Image credit: ESA.

ESA’s Euclid Mission Launches to Explore Dark Matter and Energy

Jul 3, 2023 by News Staff

The Euclid spacecraft, built and operated by ESA, with contributions from NASA, lifted off from Cape Canaveral Space Force Station in Florida at 11:12...

An artist’s impression of a supermassive black hole. Image credit: University of Hawai’i at Mānoa.

Astrophysicists Uncover First Observational Evidence of Cosmological Coupling

Feb 15, 2023 by News Staff

Cosmological coupling — a newly-predicted phenomenon in Albert Einstein’s theory of gravity — allows black holes to grow in mass without...

One photodetector array of the XENON1T detector seen through the other. Image credit: XENON Collaboration.

XENON1T Experiment May Have Directly Detected Dark Energy

Sep 16, 2021 by News Staff

Some unexplained results from the XENON1T dark-matter detector — a 1,300-kg vat of super-pure liquid xenon shielded from cosmic rays in a cryostat...

This deep field image from the Dark Energy Survey is teeming with galaxies; in fact, nearly every single object in this image is a galaxy; some exceptions include a couple of dozen asteroids as well as a few handfuls of foreground stars in our own Milky Way Galaxy. Image credit: Dark Energy Survey / DOE / FNAL / DECam / CTIO / NOIRLab / NSF / AURA / T.A. Rector, University of Alaska Anchorage & NOIRLab / M. Zamani, NOIRLab / D. de Martin, NOIRLab.

Dark Energy Survey Makes Most Precise Measurements Yet of Universe’s Composition and Growth

May 31, 2021 by News Staff

Over the course of six years, astronomers with the Dark Energy Survey (DES) surveyed 5,000 square degrees — almost one-eighth of the entire sky —...

Physicists Suggest Existence of New Type of Dark Energy

Mar 3, 2021 by News Staff

Recent measurements of the expansion rate of the Universe have plunged the standard model of cosmology, the ΛCDM model, into a crisis. In a new paper...

As the CMB light (left image) travels through the Universe until observed on Earth (right image), the direction in which the electromagnetic wave oscillates (orange line) is rotated by the angle β; the rotation could be caused by dark matter or dark energy interacting with the CMB light, which changes the patterns of polarization (black lines inside the images); the red and blue regions in the images show hot and cold regions of the CMB, respectively. Image credit: Y. Minami / KEK.

Astrophysicists Find Hints of Beyond-Standard-Model Physics in Universe’s Oldest Light

Nov 30, 2020 by News Staff

Using the polarization data from ESA’s Planck satellite, a mission that have studied the Cosmic Microwave Background (CMB), the oldest light in the Universe,...

Abdullah et al. determined that matter makes up about 31% of the total amount of matter and energy in the Universe. Image credit: Mohamed Abdullah, University of California Riverside.

Astrophysicists Measure Total Amount of Matter in Universe

Sep 29, 2020 by News Staff

Using data on a sample of 756 galaxy clusters identified in the Sloan Digital Sky Survey (SDSS), a team of astrophysicists from the United States and Egypt...

SN LSQ14fmg exploded in SDSS J221646.15+152114.2, a star-forming galaxy 100 million light-years away. Image credit: Hsiao et al, doi: 10.3847/1538-4357/abaf4c.

Astronomers Observe Slowest Rising Type Ia Supernova Ever Seen

Sep 10, 2020 by News Staff

The exaggerated properties of a Type Ia supernova dubbed SN LSQ14fmg may help reveal the origin of the ‘super-Chandrasekhar’ group of supernovae it...

Sloan Digital Sky Survey Collaboration Releases New 3D Map of Universe

Jul 20, 2020 by News Staff

Astrophysicists and cosmologists from the Sloan Digital Sky Survey (SDSS) have released the largest 3D map of the Universe ever created, filling in the...

This illustration helps explain how astronomers tracked the effects of dark energy to about one billion years after the Big Bang by determining the distances to quasars, rapidly growing black holes that shine extremely brightly. Two of the most distant quasars studied are shown in Chandra images in the insets. Image credit: NASA / CXC / M. Weiss; X-rays – NASA / CXC / University of Florence / G. Risaliti & E. Lusso.

Dark Energy May Have Varied over Cosmic Time, New Study Suggests

Jan 31, 2019 by News Staff

Astronomers using data from NASA’s Chandra X-ray Observatory and ESA’s XMM-Newton spacecraft have found evidence that an invisible force called dark...

Banerjee et al propose a new model with dark energy and our Universe riding on an expanding bubble in an extra dimension. Image credit: Suvendu Giri.

Universe May Be Riding on Expanding Bubble in Extra Dimension

Dec 28, 2018 by News Staff

A team of theoretical physicists at Uppsala University, Sweden, has devised a new model for our Universe — one that may solve the mystery of dark...

The current, widely recognized model of the Universe, called LambdaCDM, tells us nothing about what dark matter and dark energy are like physically. We only know about them because of the gravitational effects they have on other, observable matter. Dr. Farnes’ model offers a new explanation. Image credit: NASA / ESA / M. Livio / Hubble 20th Anniversary Team, STScI.

Negative-Mass Dark Fluid: Astonishing New Theory Could Explain Universe’s Missing 95%

Dec 5, 2018 by News Staff

The standard cosmological model known as LambdaCDM can only explain 5% of the observable Universe. The remaining 95% is famously made up almost entirely...

Multiverse Might Not Be as Inhospitable to Life as Previously Thought

May 15, 2018 by News Staff

Questions about whether other universes might exist as part of a larger Multiverse, and if they could harbor life, are burning issues in modern cosmology....

This illustration shows three steps Professor Riess and co-authors used to measure the Hubble constant to an unprecedented accuracy, reducing the total uncertainty to 2.3%. Image credit: NASA / ESA / A. Field, STScI / A. Riess, STScI & JHU.

Hubble Measures Universe Expansion, Gets Intriguing Hints of ‘New Physics’

Mar 12, 2018 by News Staff

A team of U.S. astronomers has used the NASA/ESA Hubble Space Telescope to make a new measurement of the Hubble constant, the rate at which the Universe...