Supernovae
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Vera C. Rubin Observatory to Detect Millions of Exploding Stars
The Vera C. Rubin Observatory, set to begin its 10-year Legacy Survey of Space and Time (LSST) later this year, will track millions of Type Ia supernovae to advance our understanding of dark energy. These supernovae, resulting from white dwarf stars in binary systems, will be studied in detail to provide crucial data on the universe’s acceleratin...
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Early Supernovas Could Have Created Water in the Universe, Paving the Way for Life 100 Million Years Post-Big Bang
A recent study suggests that supernova explosions, triggered by the death of early stars, could have created significant amounts of water just 100 million years after the Big Bang. Simulations of these early, massive stars show that their explosive deaths may have resulted in the formation of water molecules within the dense hydrogen and oxygen clo...
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Coma Cluster’s Distance Closer Than Predicted, Amplifying Hubble Tension Crisis
A new study led by Dan Scolnic and Adam Riess reveals that the Coma Cluster is 38 million light-years closer than predicted by standard cosmological models, intensifying the ongoing Hubble tension. This discrepancy, involving measurements of type Ia supernova explosions, challenges the universe's expansion rate as predicted by the Hubble–Lemaîtr...
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Meta Plans Oakley-Branded Glasses, Explores Watches and Earbuds
Meta is working on upgrade its popular smart glasses and is exploring new wearable devices such as watches and camera-equipped earbuds. Meta’s devices group, Reality Labs, also plans to release new high-end glasses with a built-in display in 2025.
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Zombie Star’s Mysterious Spiky Filaments Baffle Astronomers in New Discovery
A zombie star remnant, Pa 30, located 6,500 light-years from Earth, is surrounded by spiky filaments that have baffled astronomers. These filaments, observed for centuries, continue to puzzle scientists, as their formation and long-term stability remain unclear. The star's explosion in 1181 was initially noted by skywatchers, but its remnant struct...
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James Webb Space Telescope Unveils Hidden Interstellar Wonders of Supernova Cassiopeia A
The James Webb Space Telescope has provided a rare glimpse into the remnants of a centuries-old supernova in Cassiopeia A. Using infrared technology, the telescope captured a light echo caused by a massive star’s explosion, unveiling new insights into the interstellar medium and its magnetic structures. This breakthrough discovery offers valuable...
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James Webb Space Telescope Detects Supernova From 11.4 Billion Years Ago
Astronomers using the James Webb Space Telescope (JWST) have identified AT 2023adsv, a supernova that occurred 11.4 billion years ago. This stellar explosion, from a star 20 times the size of the Sun, offers a glimpse into the early universe's unique stellar evolution. Part of the JWST Advanced Deep Extragalactic Survey, the event highlights how th...
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White Dwarf’s Unexplainable Rapid Spin Finally Decoded by Scientists
The white dwarf star RX J0648.0–4418, 1,700 light-years away, spins at a rapid pace of 13 seconds per rotation. Part of a binary system with a helium-burning hot subdwarf star, it continues to shrink while accreting material. This rare and short-lived system provides a unique view into stellar evolution. Approaching the Chandrasekhar limit, RX J0...
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Supernova Remnant G278.94+1.35 is Closer to Earth, Claims New Study
Astronomers discovered that the supernova remnant G278.94+1.35 is located just 3,300 light years away, much closer than previously believed. Initially thought to span over 500 light years, it is now estimated to measure around 189 by 182 light years. Named "Diprotodon" after Australia’s extinct giant marsupial, this structure remains in an expand...
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Astronomers Spot New Cosmic Explosions 100 Times Brighter Than the Sun
Astronomers have discovered a new class of cosmic explosions, known as 'millinovas,' which are 100 times brighter than the Sun. These events, first identified in 2023, were observed in the Large and Small Magellanic Clouds, two satellite galaxies of the Milky Way. The millinovas are thought to occur when white dwarfs feed off a companion star, prod...
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Scientists Develop New Approach to Capture Gravitational Wave Memory from Supernovae
A study published in Physical Review Letters highlights new methods to detect the gravitational wave memory effect, a unique phenomenon predicted by Einstein's general relativity. Core-collapse supernovae (massive stellar explosions) generate these low-frequency gravitational waves, offering a rare glimpse into stellar interiors. Despite their weak...
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Namibian Observatory Spots Highest Energy Cosmic Electrons Opening Better Understanding of Cosmic Rays
The H.E.S.S. Observatory in Namibia has detected the highest-energy cosmic ray electrons ever observed, suggesting sources within a few hundred light-years. The findings point to extreme phenomena like pulsars and supernova remnants, offering insights into cosmic processes and particle accelerators. The breakthrough provides crucial data for future...
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Crab Nebula’s Strange Zebra Pattern Pulsars Could Be Due to Its Unusual Plasma Density
The Crab Nebula, home to the Crab Pulsar, has long fascinated astronomers due to its unique zebra-like radiation pattern. This strange emission, which has puzzled researchers since its discovery in 2007, is now explained by new research. A team led by Mikhail Medvedev, a physicist at the University of Kansas, uncovered that the unusual pattern is c...
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First Zoomed-in Picture of a Star Outside Our Galaxy Captured, Revealed to Be a Dying Star
The first detailed image of a star outside the Milky Way reveals WOH G64, a giant nearing its end. Captured by the Very Large Telescope Interferometer, this dying star, 1,500 times the size of the Sun, is surrounded by a cocoon of gas and dust, hinting at its eventual collapse into a supernova.
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A Nearby Supernova May End Dark Matter Search, Claims New Study
A supernova within the Milky Way could revolutionise dark matter research by producing gamma rays from axions, elusive particles theorised to exist during a star's core collapse. Scientists at UC Berkeley are calling for gamma-ray telescopes to monitor the sky, ensuring readiness for the next nearby supernova. Such an event could confirm the axion'...
-
Vera C. Rubin Observatory to Detect Millions of Exploding Stars
The Vera C. Rubin Observatory, set to begin its 10-year Legacy Survey of Space and Time (LSST) later this year, will track millions of Type Ia supernovae to advance our understanding of dark energy. These supernovae, resulting from white dwarf stars in binary systems, will be studied in detail to provide crucial data on the universe’s acceleratin...
-
Early Supernovas Could Have Created Water in the Universe, Paving the Way for Life 100 Million Years Post-Big Bang
A recent study suggests that supernova explosions, triggered by the death of early stars, could have created significant amounts of water just 100 million years after the Big Bang. Simulations of these early, massive stars show that their explosive deaths may have resulted in the formation of water molecules within the dense hydrogen and oxygen clo...
-
Coma Cluster’s Distance Closer Than Predicted, Amplifying Hubble Tension Crisis
A new study led by Dan Scolnic and Adam Riess reveals that the Coma Cluster is 38 million light-years closer than predicted by standard cosmological models, intensifying the ongoing Hubble tension. This discrepancy, involving measurements of type Ia supernova explosions, challenges the universe's expansion rate as predicted by the Hubble–Lemaîtr...
-
Meta Plans Oakley-Branded Glasses, Explores Watches and Earbuds
Meta is working on upgrade its popular smart glasses and is exploring new wearable devices such as watches and camera-equipped earbuds. Meta’s devices group, Reality Labs, also plans to release new high-end glasses with a built-in display in 2025.
-
Zombie Star’s Mysterious Spiky Filaments Baffle Astronomers in New Discovery
A zombie star remnant, Pa 30, located 6,500 light-years from Earth, is surrounded by spiky filaments that have baffled astronomers. These filaments, observed for centuries, continue to puzzle scientists, as their formation and long-term stability remain unclear. The star's explosion in 1181 was initially noted by skywatchers, but its remnant struct...
-
James Webb Space Telescope Unveils Hidden Interstellar Wonders of Supernova Cassiopeia A
The James Webb Space Telescope has provided a rare glimpse into the remnants of a centuries-old supernova in Cassiopeia A. Using infrared technology, the telescope captured a light echo caused by a massive star’s explosion, unveiling new insights into the interstellar medium and its magnetic structures. This breakthrough discovery offers valuable...
-
James Webb Space Telescope Detects Supernova From 11.4 Billion Years Ago
Astronomers using the James Webb Space Telescope (JWST) have identified AT 2023adsv, a supernova that occurred 11.4 billion years ago. This stellar explosion, from a star 20 times the size of the Sun, offers a glimpse into the early universe's unique stellar evolution. Part of the JWST Advanced Deep Extragalactic Survey, the event highlights how th...
-
White Dwarf’s Unexplainable Rapid Spin Finally Decoded by Scientists
The white dwarf star RX J0648.0–4418, 1,700 light-years away, spins at a rapid pace of 13 seconds per rotation. Part of a binary system with a helium-burning hot subdwarf star, it continues to shrink while accreting material. This rare and short-lived system provides a unique view into stellar evolution. Approaching the Chandrasekhar limit, RX J0...
-
Supernova Remnant G278.94+1.35 is Closer to Earth, Claims New Study
Astronomers discovered that the supernova remnant G278.94+1.35 is located just 3,300 light years away, much closer than previously believed. Initially thought to span over 500 light years, it is now estimated to measure around 189 by 182 light years. Named "Diprotodon" after Australia’s extinct giant marsupial, this structure remains in an expand...
-
Astronomers Spot New Cosmic Explosions 100 Times Brighter Than the Sun
Astronomers have discovered a new class of cosmic explosions, known as 'millinovas,' which are 100 times brighter than the Sun. These events, first identified in 2023, were observed in the Large and Small Magellanic Clouds, two satellite galaxies of the Milky Way. The millinovas are thought to occur when white dwarfs feed off a companion star, prod...
-
Scientists Develop New Approach to Capture Gravitational Wave Memory from Supernovae
A study published in Physical Review Letters highlights new methods to detect the gravitational wave memory effect, a unique phenomenon predicted by Einstein's general relativity. Core-collapse supernovae (massive stellar explosions) generate these low-frequency gravitational waves, offering a rare glimpse into stellar interiors. Despite their weak...
-
Namibian Observatory Spots Highest Energy Cosmic Electrons Opening Better Understanding of Cosmic Rays
The H.E.S.S. Observatory in Namibia has detected the highest-energy cosmic ray electrons ever observed, suggesting sources within a few hundred light-years. The findings point to extreme phenomena like pulsars and supernova remnants, offering insights into cosmic processes and particle accelerators. The breakthrough provides crucial data for future...
-
Crab Nebula’s Strange Zebra Pattern Pulsars Could Be Due to Its Unusual Plasma Density
The Crab Nebula, home to the Crab Pulsar, has long fascinated astronomers due to its unique zebra-like radiation pattern. This strange emission, which has puzzled researchers since its discovery in 2007, is now explained by new research. A team led by Mikhail Medvedev, a physicist at the University of Kansas, uncovered that the unusual pattern is c...
-
First Zoomed-in Picture of a Star Outside Our Galaxy Captured, Revealed to Be a Dying Star
The first detailed image of a star outside the Milky Way reveals WOH G64, a giant nearing its end. Captured by the Very Large Telescope Interferometer, this dying star, 1,500 times the size of the Sun, is surrounded by a cocoon of gas and dust, hinting at its eventual collapse into a supernova.
-
A Nearby Supernova May End Dark Matter Search, Claims New Study
A supernova within the Milky Way could revolutionise dark matter research by producing gamma rays from axions, elusive particles theorised to exist during a star's core collapse. Scientists at UC Berkeley are calling for gamma-ray telescopes to monitor the sky, ensuring readiness for the next nearby supernova. Such an event could confirm the axion'...
