expansion of the universe

Galaxies. Illustration: depositphotos.com

Accurate mapping of millions of galaxies will reveal the secrets of dark matter and the expansion of the universe

The Physics of the Universe Survey (PAUS) accelerator has revealed a groundbreaking catalog detailing distances to millions of galaxies with unprecedented precision.
From the design of the spacecraft to launch and operation - the journey is long. Key components of NASA's SPHEREx instrument, designed to investigate important questions about the universe, now in its more realized state. Credit: NASA/JPL-Caltech

NASA's SPHEREx Satellite: Exploring the Universe in 102 Infrared Colors 

"This is the first mission to view the entire sky in so many colors," said Jamie Bock, principal investigator of SPHEREx, which operates jointly at NASA's Jet Propulsion Laboratory (JPL) and Caltech.
The galaxy cluster PLCK G165.7+67.0 and SN H0pe as imaged by the NIRCam instrument on the Webb Space Telescope. Credit: NASA, ESA, CSA, STScI, Brenda Frey (University of Arizona), Roger Windhorst (ASU), S. Cohen (ASU), Jordan CJ D'Silva (UWA), Anton M. Cuckmore (STScI), Jake Summers (ASU)

The Webb Space Telescope discovered a supernova that updates the Hubble constant - the expansion rate of the universe

The discovery of SN H0pe, a distant supernova that was observed in three replicates using gravitational insolation, allowed researchers to accurately measure the Hubble constant at different times, revealing insights into the expansion rate of the universe
Imaging the Very Large Telescope (ELT) in action. This artist's rendering shows the Extra Large Telescope at night, in action atop Cerro Armazones in northern Chile. The telescope uses lasers to create artificial stars high in the atmosphere. Credit: ESO/L. Calçada

The Very Large Telescope: The largest telescope mirror in the world will bring the stars closer to Earth

The main mirror of the European Southern Observatory's (ESO) Extremely Large Telescope (ELT), known as M1, will be the largest mirror ever built for a telescope. diameter of more than 39 meters, and will consist of
The JADES Deep Field uses observations made by the James Webb Space Telescope (JWST) as part of the JADES (JWST Advanced Deep Survey) program. A team of astronomers studying the JADES data identified about 80 objects (circled in green) that changed their brightness over time. Most of these objects, called transients, are the result of exploding stars or supernovae. Credit: NASA, ESA, CSA, STScI, JADES Collaboration

The 'Webb' space telescope is a device for detecting supernovae: thanks to it, 10 times more supernovae were observed in the early universe

'Web' discovers 10 times more supernovae in the early universe than were previously known
This image of NGC 5468, a galaxy about 130 million light-years from Earth, combines data from the Hubble and James Webb space telescopes. It is the most distant galaxy in which Hubble has detected variable Cepheid stars. These stars serve as important landmarks for measuring the expansion rate of the universe.

The Webb and Hubble space telescopes confirm the universe's expansion rate, the puzzle continues

Web sightings provide new insights into a decade-long mystery
NGC 5468 — the host galaxy of Cepheid. Joint photograph of the Webb and Hubble Space Telescopes, NASA/ESA

The Webb and Hubble telescopes confirm the rate of expansion of the universe, the puzzle remains

Webb's measurements provide new light on a decade-long mystery known as the Hubble stress - the differences in the age of the universe between the Hubble observations and past observations that remain unexplained * Prof. Adam Rees, winner
An example of a supernova detected by the Dark Energy Survey within the field covered by one of the few detectors in the Dark Energy Camera. The supernova exploded in a spiral galaxy with redshift = 0.04528, which corresponds to a light travel time of about 0.6 billion years. For comparison, the quasar on the right has a redshift of 3.979 and a light travel time of 11.5 billion years. Credit DES Collaboration/NOIRLab/NSF/AURA/M.

The Dark Energy Survey publishes final results from the largest, in-depth and uniform sample of supernovae

Among the observations of about two million distant galaxies, the researchers found several thousand supernovae, and this is the largest and most profound sample of supernovae ever obtained by a single telescope. The scientists then used advanced techniques of
Conceptual diagram of this study. Signals from supernovae (close-up lower right), quasars (close-up middle left), and gamma-ray bursts (close-up top center) reach Earth in the Milky Way galaxy (background), where we can use them to measure cosmological parameters. Credit: NAOJ

Rewriting the past and future of the universe - new research sheds light on the fate of our cosmos

New research has improved the accuracy of the parameters that control the expansion of the universe. More precise parameters will help astronomers determine how the universe grew to its current state, and how it will evolve in the future.
The galaxy GS-9209. credit g. brammer c. Williams A. carnall, University of Edinburgh

Webb revealed features of a galaxy 25 billion light years away

The galaxy is currently 25 billion light-years away, but when light began to travel from it to us about 12.5 billion years ago, it was much closer, because the universe is expanding
An artist's impression of star formation in the early universe, a few hundred million years after the Big Bang. (Image credit: (Adolf Schaller/Space Telescope Science Institute, NASA)

The universe may start contracting "really" soon

In a new paper published in PNAS, three scientists attempt to model the nature of dark energy, a mysterious entity that appears to be causing the universe to expand faster and faster, consistent with previous observations of the expansion.
V Representation of the evolution of the universe over 13.77 billion years. The far left shows the earliest moment we can study today, when a period of "inflation" created a burst of exponential growth in the universe. (The size is shown by the vertical proportion of the grid in this drawing). Over the next billion years the expansion of the universe gradually slowed down as the matter in the universe was pulled towards itself by gravity. Recently the expansion began to accelerate again as the repulsive effects of dark energy became dominant in the expansion of the universe. Credit: NASA's Goddard Space Flight Center

The Uneven Universe: The Expansion of the Universe and Einstein's Theory of General Relativity

Cosmological calculations almost always assume that there is a uniform distribution of matter in the universe. This is because the calculations would be too complicated if they included the location of each and every star. In reality the universe is not uniform:
Dark energy is the name given by scientists to the phenomenon that causes acceleration in the expansion of the universe. There are three different hypotheses about the nature of dark energy: it may be a constant energy that arises from empty space itself (the hypothesis of the cosmological constant), or it may be a variable energy that originates from a fundamental field found in all of space. But it is also possible that dark energy does not exist at all and that the reason for the acceleration of the universe's expansion is that gravity behaves in a different way than our theories say when it comes to ranges on a cosmic scale. Illustration: Ævar Arnfjörð Bjarmason, Wikimedia.

The symmetron - the mysteries of dark energy

The gravitational lensing of the galaxy LRG 3-757 imaged by the Hubble Space Telescope's Wide Field Camera #3. Photo: NASA/ESA / Hubble Space Telescope

Einstein's theory of relativity was also proven in a distant galaxy

The dark energy puzzle, the mystery of why the expansion of the universe is accelerating, is a tough nut to crack. Photo: NASA and A. Riess (STScI), CC BY.

The dark energy puzzle

The discovery image (changing stars in a nearby galaxy)

Is the universe expanding faster than we thought?

Gravitational waves. Illustration: shutterstock

Have gravitational waves been found?

A model of the Hubble Space Telescope on the cargo deck of a space shuttle, as displayed at the Kennedy Space Center in Florida. Photo: shutterstock

The scientist who expanded the universe

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

This map shows the ancient light in our universe, as it was discovered with the greatest precision yet by the Planck mission. Photo: European Space Agency and the Planck Partnership. Video

The universe is 100 million years older than we thought until now

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

Landmarks in the expansion of the universe. From Wikipedia

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

Milestones in the expansion of the universe. From Wikipedia

The cold end of the universe

The most distant galaxy - 13 billion light years. Photo: Hubble Space Telescope/NASA/European Space Agency

The Hubble Space Telescope celebrates 20 years in space

The different alternatives to the universe - it turns out that it is expanding even faster than they thought

A journey through the universe following "dark energy"

Cosmic scene with DNA, stars, solvents and atomic circles in oral flow.

Watch the formation of the universe through microwaves

Cosmic scene with DNA, stars, solvents and atomic circles in oral flow.

Dimensional gates and time travel

Cosmic scene with DNA, stars, solvents and atomic circles in oral flow.

More evidence that the earth is not at the center of the universe

Cosmic scene with DNA, stars, solvents and atomic circles in oral flow.

The universe does not expand uniformly

Cosmic scene with DNA, stars, solvents and atomic circles in oral flow.

A new theory on gravitational waves and gravitational radiation

Cosmic scene with DNA, stars, solvents and atomic circles in oral flow.

What will happen in three billion years?

Cosmic scene with DNA, stars, solvents and atomic circles in oral flow.

Is the universe 15% bigger and older than we thought?

Cosmic scene with DNA, stars, solvents and atomic circles in oral flow.

The secrets of dark energy