supernova

The yellow star WOH G64 that may become a supernova. Credit: ESO / L. Calçada, CC BY

One of the biggest known stars may be approaching the final stage of its life – a supernova

  • 4 תגובות
A new study published in Nature Astronomy provides evidence that WOH G64, one of the largest known stars in the Large Magellanic Cloud, has transitioned from a red giant to a rare yellow supergiant — a transition
Graphics: N. BURGESS/SCIENCE; Data: NASA; Satellite Image: STEVEN RODNEY/UNIVERSITY OF SOUTH CAROLINA; GABRIEL BRAMMER/COSMIC DAWN CENTER/NIELS BOHR INSTITUTE/UNIVERSITY OF COPENHAGEN; Image Processing: JOSEPH DEPASQUALE/STSCI

Cosmic illusions may decide the debate over the rate of expansion of the universe

  • No comments
An expected reappearance of the supernova SN Requiem, seen repeatedly due to gravitational lensing, may provide a third way to measure the Hubble constant.
Astronomers have discovered an unusual gravitationally stimulated supernova whose light traveled more than 10 billion years to reach Earth. Illustration: depositphotos.com

Rare Excited Supernova May Help Decipher the Rate of Expansion of the Universe

  • No comments
The event SN 2025wny, seen through gravitational lensing after a journey of more than ten billion years, may provide a new measurement of the Hubble constant and contribute to the understanding of dark energy.
Sunset, just before the Vera Rubin Telescope begins nighttime operations. Photo courtesy of NSF

The Rubin Observatory's giant camera is underway, and its goal is: "To answer one question - what is the universe?"

  • No comments
The Vera Rubin Observatory has begun publishing its first discoveries – supernovae, variable stars and asteroids – ahead of the launch of the Legacy Survey of Space and Time (LSST), a ten-year sky survey.
Birth of a black hole from a collapsing star – The black hole itself is not visible; around it is an expanding envelope of dust and gas that is drawn in. Credit: Keith Miller, Caltech/IPAC – SELab.

A star in Andromeda “disappeared” without a supernova – and appears to have collapsed directly into a black hole

  • One response
Analysis of observations from 2005 to 2023 indicates a “failed supernova”: core collapse into a black hole, ejection of outer layers, creation of dust and infrared glow that could remain visible for decades to come
Supernova. Illustration: depositphotos.com

Radio signals reveal star's final years before violent supernova

  • No comments
Monitoring lasting about 18 months showed that the star emitted helium-rich gas in the last years of its life; the data hint at a binary system and a new “window” for studying stellar deaths via radio
The star system GK Persei, where a famous nova occurred, as seen by the Chandra X-ray telescope. An even brighter nova is expected to erupt from the V Sagittae system within the next century. (Credit: NASA Goddard)

The cannibal star V Sagittae: ​​New study maps the system on the way to a daylight supernova

  • One response
Recent spectroscopic analysis reveals that a hungry white dwarf and its solar-mass companion, enveloped in a giant gas disk and an extremely soft X-ray source, are on track to become a visible nova in the coming years and an extremely bright supernova in the 21st century.
Frontal (left) and side (right) images of a galactic gas disk. These images of gas spreading after a supernova explosion were created by the alternative deep learning model. Credit: RIKEN

New AI technology maps 100 billion stars in our galaxy with unprecedented accuracy and speed

  • No comments
Combining a deep learning model with physical simulation saves decades of computation and allows for tracking both supernovae and long-term galactic evolution.
Cassiopeia A supernova. Image credit: NASA, ESA, CSA, Danny Milisavljevic (Purdue University), Tea Temim (Princeton University), Ilse De Looze (UGhent). Processing: Joseph DePasquale (STScI).

James Webb Telescope reveals unprecedented details in supernova remnant Cassiopeia A

  • One response
Infrared image reveals complex structures, the "green monster," and a glimpse into the sources of cosmic dust – the building blocks of stars, planets, and life
Artist's impression of a neutron star collision – one of the known sources of gamma rays. Credit: ESO/L. Calçada/M. Kornmesser

Unusual gamma-ray burst: lasted a day and repeated itself

  • 2 תגובות
The GRB 250702B event violates all existing models – it may be a medium-mass black hole or an extremely rare core collapse
The binary star system V Sagittae – 10,000 light-years from Earth – shines brightly because a voracious white dwarf is devouring its larger twin. Credit: University of Southampton

A hungry star is devouring its cosmic twin at a rate never before observed * In a few years we will be able to see the supernova in daylight

  • No comments
The V Sagittae system, 10,000 light-years away, is expected to end in a supernova so bright it will be visible from Earth during the day.
Massive stars in the Small Magellanic Cloud. Of the stars examined, seventy percent (the red diamonds) appear to be accelerating and decelerating. This suggests the existence of a companion. Credit: ESO/Sana et al.

Researchers discovered: Massive stars in metal-poor galaxies are also born in pairs

An international team led by scientists from Belgium, the Netherlands and Tel Aviv University has found that over 70% of the massive stars in the Small Magellanic Cloud have partners – a finding that sheds new light on the first stars
After the Big Bang, an interstellar cloud of gas and dust composed of the elements silicon (gray), sulfur (yellow), and argon (purple) remained.

Giant star caught naked, revealing source of silicon and sulfur formation

An international team of scientists, led by Northwestern University and the Weizmann Institute of Science, has identified a new type of supernova that provides a rare glimpse into the depths of stars and reveals sites of production of heavy chemical elements.
The companion star (blue) of Betelgeuse (orange) was discovered using the Alupka instrument at the Gemini North Observatory. The discovery answers a millennia-old question about why Betelgeuse's brightness varies on a cycle of about six years. Credit: International Gemini Observatory/NOIRLab/NSF/AURA Image processing: M. Zamani (NSF NOIRLab)

After decades of searching: Betelgeuse's elusive companion star discovered

  • 2 תגובות
Using the Gemini Telescope in Hawaii, astronomers have managed to locate a young star orbiting Betelgeuse, within its atmosphere – a discovery that explains the red supergiant's brightness fluctuations.
This Hubble image of IC 758 shows a peaceful galaxy – but beneath its calm appearance lies the remains of SN 1999bg, the explosive death of a massive star. Credit: ESA/Hubble & NASA, C. Kilpatrick

Quiet Galaxy, Explosive Secret: The Supernova Surprise of the Serene Spiral

  • No comments
A seemingly peaceful galaxy hides the dramatic consequences of the violent death of a massive star.
ASKAP J1832 belongs to a rare group of objects in space that pulsate in radio waves every few tens of minutes, but what makes it unique is its emission in X-rays as well, as detected by NASA's powerful X-ray observatory, Chandra. This is the first time that X-ray signals have been observed from this type of object, known as "long-period radio phenomena." Credit: X-ray: NASA/CXC/ICRAR, Curtin Univ./Z. Wang et al.; Infrared: NASA/JPL/CalTech/IPAC; Radio: SARAO/MeerKAT; Image processing: NASA/CXC/SAO/N. Wolk

A new mystery in the galaxy's sky: a star that emits radio waves and X-rays at an extremely slow rate

  • No comments
A star called ASKAP J1832 pulsates in both radio and X-rays every 44 minutes—a frequency much slower than any pulsar ever recorded. This unprecedented phenomenon hints at a
Hidden in the southern sky, the constellation Vela hides a cosmic gem – the remnant of a spectacular supernova explosion that occurred 11,000 years ago. This mesmerizing image, captured in breathtaking detail by the Very Large Telescope, shows a swirl of pink and orange filaments, reminiscent of a celestial bird frozen in time. (Credit: ESO/VPHAS+ Team: CASU)

A supernova explosion that looks spectacular even after 11,000 years

  • 2 תגובות
When massive stars reach the end of their lives, they explode as supernovae, shedding their outer layers. These explosions send shock waves through the surrounding gas, compressing and reshaping it, creating spectacular displays.
This Hubble image captures the stunning remains of an exploded star in the distant galaxy LEDA 132905, located more than 400 million light-years away. Credit: ESA/Hubble & NASA, RJ Foley (UC Santa Cruz)

Hubble captures the dramatic end of a distant supernova

  • No comments
The Hubble Space Telescope has documented the remnants of the supernova SN 2022abvt in the distant galaxy LEDA 132905, more than 400 million light-years from Earth.
Hypernova shockwave eruptions: Hypernovae are even more violent astronomical phenomena than supernovae, with explosion energies that exceed those of supernovae by more than ten times. These powerful explosions are usually accompanied by powerful jets that create unique shock explosion structures at the poles of the star. The jets not only cause the explosion, but also create strong flow instabilities within the ejected material, which causes further mixing of the star's interior. Recent observational data suggest that the famous supernova 1987A may be associated with a jet explosion, rather than the spherical explosion predicted by previous one-dimensional models. Credit: ASIAA/ Ke-Jung Chen

Predicting stellar explosions: New simulations reveal the physics of supernova shockwave eruptions

  • No comments
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 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
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
Beetlejuice, Red Superstar. Infographic: depositphotos.com: depositphotos.com

New evidence that the nearby red giant Betelgeuse 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
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
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
A simulation of a possible explanation for the speed of an L substar named CWISE J124909+362116.0 shows it as part of a binary star pair that ended in a supernova explosion of the white star. Credit: Adam Makarenko / WM Keck Observatory

An extremely fast star has been discovered speeding through the Milky Way at a speed of 2.1 million km/h

  • No comments
The planet was discovered thanks to the efforts of 80 participants in a citizen science project called "Rear Worlds: Planet 9" and a team of astronomers from all over the United States
The bright twinkling is the supernova SN 2023ixf in the Vane Galaxy. Image based on telescopic data obtained on May 20, 21 and 22, 2023. Credit: Travis Dew, University of Arizona (Hosseinzadeh et al. 2023)

A once-in-a-lifetime supernova: unprecedented mapping of a stellar explosion

Artist's impression of GRB 211211A. Credit: Soheb Mandhai @TheAstroPhoenix

Cosmic Gold Factory: A single kilonova produced very heavy elements in the amount of a thousand times the mass of Earth

  • No comments
A highly unusual burst of high-energy light from a nearby galaxy is linked by scientists to a neutron star merger
Betelgeuse dims over time, with an interstellar cloud seen in the last panel. NASA, ESA and E. Wheatley (STScI)

Beetlejuice: The star continues to behave mysteriously - here's what will happen if it explodes

  • 2 תגובות
At the end of 2019, the light of the star dimmed and went from the brightest in the Orion group to the third brightest. Since then it has returned and become even brighter than before
A star exploding is a dramatic event, but the debris the star leaves behind can be even more dramatic. A new mid-infrared image from the James Webb Space Telescope provides one stunning example. It shows the remains of the supernova Cassiopeia A (Cas A), created by a stellar explosion 340 years ago. The image shows bright colors and complex structures. Cas A is the youngest known remnant of a massive exploding star in our galaxy, offering astronomers an opportunity to understand the star's death process. Image credit: NASA, ESA, CSA, D. Milisavljevic (Purdue University), T. Temim (Princeton University), I. De Looze (UGent), J. DePasquale (STScI)

Let's see how Cassiopeia is doing: Webb reveals new details on the Cassiopeia A supernova

  • 4 תגובות
Webb recorded what remained after the death of a star only 11 thousand light years away from us. It is a relatively new supernova - only 350 years old
The star Wolf-Raya and the nebula that surrounds it as captured by the lens of the Hubble Space Telescope of NASA and the European Space Agency. In the new study, a supernova was observed for the first time in a star of this type // NASA/ESA Hubble Space Telescope

A boom in the middle of the universe: a supernova of a rare type has been discovered

Weizmann Institute scientists have identified a new type of supernova in a galaxy a billion light years away
Beetlejuice goes supernova. Illustration: shutterstock

The famous star Betelgeuse has faded, but it still probably won't explode anytime soon

  • 14 תגובות
In the drawing, a supernova remnant is shown, and the "ears" are marked with an annular line. From Dubner et al. 2013

Why do many supernovae look like Mickey Mouse?

  • 5 תגובות
This is a series of observations that began in the shortest time so far since the start of a supernova explosion. Source: Weizmann Institute magazine.

Three hours after the explosion

  • 3 תגובות
What could cause the most powerful flash of light ever observed?

The most powerful flash of light ever observed in space - probably the result of a star "falling" into a black hole

  • One response
The Cancer Nebula: These supernova remnants glow with energy from a spinning neutron star driving a vortex of magnetized plasma. Source: NASA.

Strange supernovae reveal the stars' secrets

  • 2 תגובות
An artist's rendering of the powerful supernova ASASSN-15lh as it would have been seen from a planet 10,000 light-years away in the same galaxy where the supernova occurred. Illustration: Beijing Planetarium/Jin Ma

The most powerful supernova ever observed

  • 6 תגובות
SN 2013cu

Weizmann Institute scientists analyzed the composition of the elements emitted from a rare star, just before it exploded

  • 5 תגובות
Orion Nebula. Photo: NASA. Processing: shutterstock

Low orbit - an ULTRASAT satellite based on Israeli technology, will scan the sky in the ultraviolet range

  • No comments
The supernova 2014J as photographed on January 28, 2014 from Tel Aviv University's Weiss Observatory in Mitzpe Ramon. Photo: Dobi Poznansky and Shay Caspi, Mitzpe Wise, Tel Aviv University

From Ramon Crater you can see: a close and dusty supernova

  • 3 תגובות
The galaxy M82 and the new supernova. Photo: Lemon Observatory in Arizona.

A great light in the sky

  • 3 תגובות
[SBW2007] 1 - A star about to explode as a supernova. Photo: Hubble Space Telescope/NASA/European Space Agency.

Hubble watches a star about to explode

  • 8 תגובות
Do you see the shape of a hand in the new x-ray image? The hand may look just like an x-ray at the doctor's, but it is actually a cloud of material ejected from an exploding star. The array of telescopes capable of nuclear spectroscopy Nuclear Spectroscopic Telescope Array or NuSTAR for short (NuSTAR) photographed the structure in the field of high X frequencies for the first time. Earlier image, lower-energy X-rays taken by the Chandra Space Telescope are seen in green and red in the image. Photo: NASA/JPL-Caltech/McGill

The Nostar space telescope photographed the pulsar known as the "Hand of God"

  • 12 תגובות
The absorption lines measured in the Cancer Nebula corresponding to argon hydrides (ArH). Photo: Cardiff University

A noble gas molecule was first discovered in space

  • 3 תגובות
November 12, 2011 gamma ray burst

A new type of gamma ray burst shows a new way for a star to die

  • One response
The remains of supernova W49B. (X-ray: NASA/CXC/MIT/L. Lopez et al; Infrared: Palomar; Radio: NSF/NRAO/VLA)

The young black hole in the Milky Way has been discovered

  • 16 תגובות
supernova From Wikipedia

Small explosion, big explosion

  • 2 תגובות
The supernova SN 2005gl

Space - super-supernovas / Avishi Gal-Yam

  • 3 תגובות
Locating supernova nuclei using neutrino particles and gravitational waves. Illustration: Caltech.

Researchers have found a way to study supernovae using neutrino particles and gravitational waves

  • 9 תגובות
Pure tellurium crystal. Photo: MIT

The rare element tellurium was first detected in ancient stars

  • 15 תגובות
Science website logo
SEARCH