Astrophysics

A swirling galaxy with a GD-1 star stream and a dark matter halo. The illustration was created using DALEE and is not a scientific image.

Dark matter solves the mystery of the Milky Way's stellar streams

  • One response
New study suggests that a dense subhalo of self-interacting dark matter is responsible for the bulge and gap formations of the GD-1 stellar stream, challenging dark matter theories
The Herbig-Harrow object HH ​​32 in Camelopardalis: gas clouds and star photos.

Hubble's stunning peek into the Orion Nebula reveals a bustling nursery of young stars

  • No comments
A Dyson ball designed to block the sun and use all its energy. Illustration: depositphotos.com

Could black holes be a source of energy for aliens? New research reveals fascinating possibilities

  • 4 תגובות
Scientists propose a new way to search for advanced civilizations: detecting energy signatures of structures around black holes, which may be visible up to 17,000 light-years away
Schematic overview of a wide orbiting binary system within the Milky Way. As it moves through the galaxy, the ellipticity of its orbit changes due to the gravitational influence of the galaxy and encounters with nearby stars, leading to close encounters (small image). Credit: Jakob Stegmann et al 2024 ApJL 972 L19

The role of galactic gravity in black hole collisions: a groundbreaking study

  • No comments
New research shows how the host galaxy's gravity affects distant pairs of stars, bringing the black holes into extreme and rare collisions accompanied by powerful gravitational waves
Bodies of water on other planets may be a source of life. Jupiter's moon Europa, where scientists believe an ocean exists beneath the ice, may be a suitable place for life to exist. Source: NASA.

Discovery: even in the ice worlds there is water in a liquid state, which is one of the main conditions for existence of life

  • No comments
New research sheds light on icy oceanic worlds like Jupiter's moon Europa, focusing on a new thermodynamic concept called "cenotactics"
In this artist's illustration, light from a distant quasar passes through the halo-like halo of a galaxy's circumgalactic medium on its way to Earth, where it is measured by the Hubble Cosmic Source Spectrograph to determine the composition of the halo. Credit: NASA/ESA/A. Field

The carbon in our body apparently went out into the halo of the galaxy and returned on a "cosmic conveyor belt"

  • No comments
A spiral galaxy with a bright core, new star arms, and surrounding cosmic structures.

Hubble photographed the explosion of a star 650 million light years away

  • No comments
The Hubble Telescope records a Type Ia supernova explosion in the galaxy LEDA 22057, 650 million light-years away, with new insights into the evolution of white dwarfs
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
Supernova explosions reveal patterns in star formation across the universe. Illustration: depositphotos.com

Supernova explosions reveal patterns in star formation across the universe

  • No comments
Scientists are cracking the secrets of star formation by following the explosive trails of dead stars. This method could prove that all stars, everywhere in the universe, are created in the same way
The Webb Space Telescope has provided evidence that contradicts existing theories by confirming the existence of long-lived protoplanetary disks in heavy-element-deficient environments, suggesting the need to change our understanding of planet formation in the early universe. Credit: NASA, ESA, CSA, STScI, Olivia C. Jones (UK ATC), Guido de Markey (ESTEC), Margaret Meixner (USRA)

The James Webb Space Telescope challenges theories about the formation of planets in the early universe

  • One response
New discoveries indicate that protoplanetary discs can survive longer in environments poor in heavy elements, contrary to previous assumptions
New findings in Omega Centauri indicate many stellar black holes instead of one medium-sized black hole, based on analysis of pulsar data. credit: University of Surrey

Has the mystery been solved? Hidden black hole cluster discovered in Omega Centauri

  • One response
Illustration of the Kepler-51 system and its three inner planets, characterized by extremely low density. New observations from NASA's James Webb Space Telescope indicate that at least one more planet exists in the system. Credit: NASA, ESA L. Hustak, J. Olmsted, D. Player F. Summers (STScI).

Another planet from the "cotton ball" family was discovered in the Kepler-51 system

  • No comments
The black hole of our Milky Way as seen in polarized light. Astronomers have for the first time been able to measure polarity, a hallmark of magnetic fields, so close to the rim of Sagittarius A*. The lines added to the image indicate the direction of polarization, which is related to the magnetic field around the shadow of the black hole. Credit: EHT Collaboration

Strong magnetic fields surround the Milky Way's central black hole

  • No comments
This image of the Sombrero galaxy, taken by Webb's Medium AA camera, is shown with compass arrows, a scale, and a color key. The image shows wavelengths of medium AA light translated into visible light colors. The color key shows the filters used when they collected the light. The color of each filter name is the color of the visible light used to represent the AA light passing through that filter. The north and east compass arrows show the direction of the image in the sky. Credit: NASA, ESA, CSA, STScI

The Webb Space Telescope photographs the Sombrero Galaxy in a new light

  • One response
The antenna galaxies are in the process of collisions. Credit: NASA

How cosmic collisions created the largest galaxies in the universe

  • No comments
The study suggests that these galaxies were formed from large flows of cold gas and collisions between galaxies in the early universe, which led to the formation of stars at an extremely fast rate
WEAVE data are superimposed on an image from the Stephen Quintet's James Webb Space Telescope, with green contours showing data from the LOFAR radio telescope. The orange and blue colors follow the hydrogen-alpha luminosity measured by WEAVE LIFU, which shows where the intergalactic gas is ionizing. The hexagon marks WEAVE's observational coverage, 36 kilofarsecs wide (similar to the width of the Milky Way). Credit: University of Hertfordshire.

A galactic collision at a speed of 3.2 million km/h has been documented in great detail

  • One response
The dramatic event took place in the Stefan Quintet group, a galactic group that has been studied for nearly 150 years. The collision created a powerful shock wave, described as "like the supersonic boom of a fighter jet," one of the most impressive energetic processes
Prof. Ron Lipshitz. Photo: Tel Aviv University spokesperson

 Podcast: Introduction to Emergence and the Mesoscopic Space | The never-ending journey from the simple to the complex (chapter 1)

  • No comments
Prof. Ron Lipshitz - School of Physics and Astronomy, Tel Aviv University is a guest on Tel Aviv University's Tel Aviv 360 podcast
Artistic interpretation of the system IRAS 04125+2902 (TIDYE-1). Young stars like this are covered in starspots - cooler regions of the surface of the star around them. The inner disk is emptied, leaving an intact outer disk that forms a donut-like structure around the host star. The outer disk is almost in front of the face, compared to the orbit of the planet around the star which is in front of the rim. This allows an unobstructed view of the system. If the disk was also in front of the rim, it would block the planet and host star, preventing the discovery. Credit: NASA/JPL-Caltech/R. Hurt, K. Miller (Caltech/IPAC)

The discovery of the planet TIDYE-1, the youngest so far, shatters the theories about the formation of planets

  • 3 תגובות
Researchers have discovered TIDYE-1, a young planet only three million years old, rapidly orbiting its star * An intact outer disk and unique orbit reveal the star and its planet thanks to
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

  • 2 תגובות
A magnificent black hole with an allocation disk and a cosmic hill of matter.

Supermassive black holes defy physics to become cosmic giants

  • 2 תגובות
Researchers have linked X-ray emissions from 21 distant quasars to the rapid growth of supermassive black holes in the early universe
This image from the ALMA telescope shows the star system HD101584 and the complex gas clouds surrounding the binary pair. The clouds are the result of two stars that shared a common outer layer in the last moments of their lives. Credit: ALMA (ESO/NAOJ/NRAO), Olofsson et al., : Robert Cumming.

Dead and Alive: Astronomers Reveal Star Pairs That Are Changing Our Universe

  • No comments
Astronomers have discovered for the first time pairs of binary star systems, consisting of the remnant of a dead star (a white dwarf) and a living star (a main sequence star), within young clusters
A white dwarf orbits a rapidly spinning neutron star. The image was prepared using DALEE and is not a scientific image

716 revolutions per second: the fastest spinning neutron star in the Milky Way

  • No comments
Using a telescope on the International Space Station, researchers have discovered a neutron star in the Milky Way that rotates at an incredible 716 times per second - among the fastest ever discovered
The internal dynamics of a black hole. The image was prepared using DALEE and is not a scientific image

A black hole with hidden instability: Theories of spacetime may be rewritten

  • One response
New research reveals an accumulation of energy inside black holes, which could undermine traditional models and change our understanding of these cosmic structures
A planet with an atmosphere. The image was prepared using DALEE and is not a scientific image

Life beyond the earth? James Webb Space Telescope Probes Crucial Clues About Distant Planets

  • 2 תגובות
New research suggests that rocky planets orbiting red dwarfs may have stable atmospheres suitable for life, with promising evidence from the James Webb Space Telescope
A black hole with its bright event horizon. Illustration: depositphotos.com

Black holes send signals - a breakthrough method by astrophysicists to decipher them

  • No comments
Astrophysicists have developed a method for detecting echoes of light from black holes that will allow measuring their mass and rotation
A crew member works under the Roman instrument carrier during the coronagraph integration in a clean room at NASA Goddard Center in October 2024. Credit: NASA/Sydney Rohda

The 'Roman' space telescope received a device that will allow breaking new ground in the search for extraterrestrial worlds

  • One response
The developments in modern astrophysics make it increasingly possible to discover astrophysical explosions

A revolution in astrophysics: a model of the most powerful explosions in the universe

  • No comments
The developments in modern astrophysics make it increasingly possible to discover astrophysical explosions
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

  • One response
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
Galaxies. Illustration: depositphotos.com

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

  • No comments
The Physics of the Universe Survey (PAUS) accelerator has revealed a groundbreaking catalog detailing distances to millions of galaxies with unprecedented precision.
Searching for life in the TRAPPIST1 system. Illustration of the knowledge site using FLEX-1

A new technique enables the discovery of extraterrestrial communication between planets in the TRAPPIST-1 system

  • No comments
Artist's illustration of the V404 Cygni double X-ray system. Credit: Jorge Lugo

The discovery of the first triple black hole system provides clues to the formation of black holes

  • No comments
A surprising discovery challenges existing models of black hole creation and reveals the age of the stellar system
This image taken by Webb shows an ancient quasar (in the red circle) with fewer neighboring galaxies than expected. Credit: Christina Eilers/EIGER team

The Webb Space Telescope discovers quasars where they shouldn't exist

  • 4 תגובות
Astronomers have used the Web to discover individual ancient quasars of uncertain origin
Observations on the first light of the universe. The image was prepared using DALEE and is not a scientific image

Cosmic Archaeology: Deciphering the Mystery of the First Light of the Universe 

  • 2 תגובות
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

  • No comments
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
The James Webb Space Telescope enables a detailed analysis of the atmospheres of extrasolar planets and the possibility that they have life. Credit: NASA GSFC/CIL/Adriana Manrique Gutierrez

Molecular illusion: Laboratory findings cast doubt on signs of extraterrestrial life

  • No comments
New research challenges the assumption that specific molecules detected on other planets are a sign of life, showing that they can be synthesized under controlled laboratory conditions without any biological activity
Beetlejuice, Red Superstar. Infographic: depositphotos.com: depositphotos.com

New evidence that the nearby red giant Beetlejuice has a hidden companion

  • 3 תגובות
Another study revealed that for most of the last two thousand years the color of the star was yellow and not red, which shows that its transformation into a red giant is a new development, and therefore they distance the prediction of its transformation
Image: This artist's rendering of a planet-forming disk surrounding a young star shows a swirling "pancake" of hot gas and dust from which planets form. Using the James Webb Space Telescope, the team obtained detailed images showing the layered, conical structure of the disc's winds - streams of gas blowing out into space. Credit: National Astronomical Observatory of Japan (NAOJ)

Winds of Change: The James Webb Space Telescope Reveals Elusive Details in Young Star Systems

  • No comments
Astronomers have discovered new details about gas flows that shape planet-forming disks and shape them over time, offering a glimpse into how our solar system likely formed
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

  • 2 תגובות
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
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

  • One response
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
This collage shows a small selection of regions of the Milky Way captured as part of a map created from the most detailed infrared wavelength imaging of our galaxy. Here you can see, from left to right and from top to bottom: NGC 3576, NGC 6357, Messia 17, NGC 6188, Messia 22 and NGC 3603. All are clouds of gas and dust in which stars are formed, with the exception of Messia 22, which is a very dense group of ancient stars. Photo: European Southern Observatory ESO

The most detailed infrared map of the Milky Way has been published

  • No comments
The images were taken with ESO's Visible and Infrared Survey Telescope (VISTA) in Chile and its VIRCAM infrared camera
The European Space Agency's (ESA) Gaia satellite reveals the Large Magellanic Cloud in spectacular detail, using radiation mapping instead of photography to show its bright, massive stars and prominent star-forming regions, such as Region 30 Degas. Credit: ESA/Gaia/DPAC.

The Large Magellanic Cloud: Star mapping changes our view of a nearby galaxy

  • No comments
The European Space Agency's Gaia satellite creates a precise radiation map of the Large Magellanic Cloud, showing the massive stars and prominent star-forming regions
MWA detectors in Western Australia will assist in the search for signs of extraterrestrial technology. Photo: STI Institute

A first-of-its-kind study will scan 2,800 galaxies for extraterrestrial technology

  • No comments
The SETI Institute, the SETI Research Center in Berkeley, and the International Center for Radio Astronomy Research in Western Australia. The research is the first attempt to search for extraterrestrial technology in galaxies outside our galaxy, focusing on low frequencies
This figure shows a stage in the merger of two galaxies that creates a single galaxy with two supermassive black holes at the center and surrounded by disks of hot gas. The black holes orbit each other for hundreds of millions of years as they merge to form a single supermassive black hole that sends out powerful gravitational waves. Credit: NASA/CXC/A.Hobart

Gravitational waves hint that the universe still has secrets

  • One response
New research sheds light on the origin of low-frequency ripples in space-time
The planet WASP 107b. Credit: Rachel Amaro, University of Arizona

James Webb Space Telescope Reveals Unique, Bloated, Asymmetric Extrasolar Planet

  • One response
NASA used the James Webb Space Telescope to detect an atmospheric asymmetry on the extrasolar planet WASP-107b. This unprecedented observation reveals differences in temperature and cloud properties between the planet's eastern and western sides,
The image shows the barred spiral galaxy NGC 1559 as seen by the James B. Space Telescope. The galaxy contains a clear central region with a distinctive open pattern in the loose spiral arms. NGC 1559 is about 35 million light-years away in the little-observed southern constellation, the Reticulum. Credit: ESA/Webb, NASA & CSA, A. Leroy, J. Lee and the PHANGS team.

The light of knowledge: a new look at the grief into the southern group of the hunting net

  • No comments
The Hubble Space Telescope photograph of NGC 1559 shows the active star formation regions of the galaxy using special light filters
Galaxy display in the deep valley, including spectacular spiral and amorphous galaxies and diverse stars.

In the "Pablo" galaxy, high-speed ejection of gas by the black hole stopped the formation of new stars

  • 5 תגובות
Nebula appearance with stars in the night sky, spectacular colors and amazing details. Illustration: depositphotos.com

Unstable carbon compounds in space? A new discovery may explain the cosmic origins of life 

  • No comments
Researchers at the University of Maryland have developed a new method to produce unstable carbon compounds, specifically hydroxymethylene, using UV rays to break down methanol. This discovery not only explains the formation of carbon compounds on the surface of a sphere
Web image showing the quasar J0148 circled in red. The upper small image shows the central black hole and the lower the stellar emission from the host galaxy.

How did black holes get so big and so fast? The answer lies in dark matter

  • No comments
Artist rendering of HD 149026 b. Credit: Astrobiology Center

Water vapor has been found in the atmosphere of a very hot Saturn-like extrasolar planet 250 light years away

  • One response
To discover atmospheric signatures from the planet, the team used a technique called transmission spectroscopy. When a planet passes in front of its host star relative to an observer on Earth, some of the star's light passes through its atmosphere.
Artist's impression of NASA's New Horizons spacecraft against deep space. More than 7.3 billion kilometers from Earth, the spacecraft sees areas of the universe that would otherwise be too dim. Credit: NASA, APL, SwRI, Serge Brunier (ESO ), Marc Postman (STScI), Dan Durda.

Exploring the Dark Universe: Breakthroughs from NASA's New Horizons Deep Space Probe

  • One response
Science website logo
SEARCH