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supernovae

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

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Among the observations of about two million distant galaxies, the researchers found several thousand supernovae, and this is the largest and deepest sample of supernovae ever obtained with a single telescope. The scientists then used advanced machine learning techniques to help classify the supernovae
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

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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.
A massive magnetic helium star, on its way to becoming a magnetizer. Figure: ESO

A new type of star has been discovered: a massive magnetic helium star

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Astronomers at the European Southern Observatory discovered that the star HD 45166 is a neutron star about to become a megastar
Imaging the supernova explosions of the first giant stars to form in the Milky Way. The star J0815 + 4729 formed from the material ejected by these first supernovae. Photo courtesy of Gabriel Perez, SMM (IAC).

Astronomers have detected amounts of oxygen in the atmosphere of an ancient star

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Beetlejuice goes supernova. Illustration: shutterstock

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

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A collapsing star's supernova. (collapsar) (NASA Goddard Space Flight Center)

Is a supernova the source of heavy metals on Earth?

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An image consisting of three color filters in visible light of the Andromeda galaxy taken with the telescope of the Zwicky facility on Mount Plumer. The image covers 2.9 square degrees - one 16th of the telescope's full field. Andromeda or Messier 31 is the nearest large galaxy to our Milky Way galaxy, which is 2.5 million light-years away. Photo credit: ZTF/D. Goldstein/R. Hurt/Caltech

Over 1,100 supernovae and 50 near-Earth objects have been discovered through a new survey

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This image, taken in March 2010 by NASA's Spitzer Space Telescope and released this week to mark the telescope's 15th anniversary, shows the remains of the supernova HBH 3. Infrared wavelengths at a wavelength of 3.6 microns are mapped in blue, and light at a wavelength of 4.5 microns is translated into red The white color of the star-forming region is a combination of two wavelengths, while HBH3's "filaments" radiate only at a wavelength of 4.5 microns. In 2016, NASA's Fermi Gamma-ray Telescope detected a plume of gamma radiation coming from the region near HBH 3. This emission may come from gas within one of the star-forming regions near the supernova that has collided with particles ejected from the supernova itself. Photo: NASA

The pale ghost of a star long dead

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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

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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

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The discovery image (changing stars in a nearby galaxy)

Is the universe expanding faster than we thought?

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A simulated color image of Cassiopeia A, combining information from three sources: red - information from the Spitzer Space Observatory, orange - from Hubble, and green and blue - from Chandra

Supernovae showered radioactive materials on Earth

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Image from a Type Ia supernova simulation. In the simulation, a star exploding in a Type Ia supernova (in dark brown). Material from the supernova was ejected at a speed of about 10,000 kilometers per second. The material hits its companion star (in light blue). This violent collision produces ultraviolet pulses that eject from a "hole" created by the companion star. Image: Dan Kasen

A star explodes in a supernova and takes the companion star with it

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Dr. Eran Ofek. From "Astropedia"

Early warning before a star explodes

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The center of the Milky Way. In this image painted with artificial colors, the lines are emphasized that reveal the dust region of Sagittarius A - East - remnants of an ancient supernova. The photo was published in 2015

In the center of the Milky Way, the supernova dust factory was revealed

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Astronomers used the Hubble Space Telescope to take a sharper and larger image of the Eagle Nebula - the "Pillars of Creation". Photo: NASA/ESA/Hubble Heritage Team (STScI/AURA)/J. Hester, P. Scowen (Arizona State U.)

The Pillars of Creation - the icon of the mourning photographs, are crumbling

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Artist's impression of a neutron star and white dwarf thrown away from their host galaxy. Once outside the galaxy, they merge to form the universe's loneliest supernova. Credit: Mark Garlick / space-art.co.uk / University of Warwick

The lone supernova in the universe

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supernova Illustration: shutterstock

Will a supernova in the Milky Way be visible from Earth in the next 50 years?

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November 12, 2011 gamma ray burst

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

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Artist's impression of a type Iax supernova - where the white dwarf is not completely destroyed and is therefore very weak. Image: Harvard Smithsonian Center for Astrophysics

A new type of supernova has been discovered

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The supernova SN 2005gl

Space - super-supernovas / Avishi Gal-Yam

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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

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SN 2011fe. From Wikipedia

A supernova in a neighboring galaxy sheds new light on exploding stars

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7 supernovae in one galaxy

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An example of a supernova discovered in the deep field of the Subaru telescope, by researchers from Israel, Japan and the USA

Israeli researchers discovered the oldest and most distant exploding stars in the universe

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