Hayadan > Space and astronomy > Astrophysics
Astrophysics
- Avi Blizovsky
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Astrophysicists have long suspected that small, non-star-forming dark matter halos may exist, but no one knew the exact mass limit at which the transition occurs.
- Avi Blizovsky
- 6 תגובות
Even if life is not found on other planets, clever survey designs and careful statistics can still reveal how rare, or common, life really is in the universe.
- Avi Blizovsky
- 4 תגובות
The James Webb Space Telescope has detected possible chemical signs of life in the atmosphere of an exoplanet, but researchers warn it's still too early to tell.
- Avi Blizovsky
- One response
Principal Investigator: “The findings prove that the extreme conditions in which planets formed in perpendicular orbits are indeed possible in nature.”
- Avi Blizovsky
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New photo of Messier 77 reveals glowing filaments reminiscent of octopus tentacles, clarifying its true identity as a spectacular spiral galaxy
- Avi Blizovsky
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Long-term James Webb observations reveal dynamic changes in the plasma disk surrounding Sagittarius A*
- Avi Blizovsky
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A giant spiral galaxy with powerful jets from a black hole has shocked scientists, because it shows that even galaxies like ours can release dangerous radiation at some point.
- Avi Blizovsky
- 3 תגובות
New research using the ALMA telescope reveals that frequent and extremely intense bursts of radiation from Proxima Centauri could destroy the atmospheres of nearby planets and make them uninhabitable.
- Avi Blizovsky
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A stunning new image from the James Webb Space Telescope reveals a cosmic illusion called an Einstein ring, where the light from a distant galaxy is distorted into a perfect circle by the gravity of a closer galaxy.
- Avi Blizovsky
- 3 תגובות
A new study has found that two-thirds of distant galaxies rotate clockwise, a surprising imbalance compared to the random distribution that would have been expected.
- Avi Blizovsky
- 2 תגובות
New research reveals that radiation from active galactic cores can strengthen the protective ozone layer in oxygen-rich atmospheres and protect life from extinction.
- Avi Blizovsky
- One response
The "Firefly" galaxy, discovered by the James Webb Space Telescope, existed just 600 million years after the Big Bang—with a mass similar to the young Milky Way. Gravitational lensing enabled a seamless observation
- Avi Blizovsky
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Dark energy may not be constant after all. DESI analysis of millions of galaxies shows signs that it may be evolving, suggesting a huge shift in cosmology
- Avi Blizovsky
- 2 תגובות
Astronomers from the University of Michigan have revealed the smallest and faintest galaxy yet discovered around the Andromeda Galaxy, and their discovery raises new questions about the formation and survival of dwarf galaxies.
- Avi Blizovsky
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Astronomers may finally solve a decades-old mystery: A strange X-ray signal from a dying star at the end of its life may indicate that the white dwarf destroyed a nearby planet.
- Avi Blizovsky
- 2 תגובות
The planets were discovered orbiting Barnard's Star, one of the closest stars to the Sun.
- Avi Blizovsky
- 4 תגובות
Astronomers have discovered a puzzling cosmic anomaly – a supermassive black hole in the galaxy NGC 5084 that appears completely tilted relative to its galactic structure.
- Avi Blizovsky
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Scientists have discovered two mysterious interstellar objects containing water-rich ice and organic molecules, but their characteristics do not match any known objects. Are these cosmic relics or a new environment for the formation of living molecules?
- Avi Blizovsky
- 2 תגובות
Researchers have discovered that black holes can pump and release huge amounts of energy through magnetic fields and magnetized accretion disks, which could change our understanding of galaxy formation and the evolution of the universe.
- Avi Blizovsky
- 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.
- Avi Blizovsky
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HD 20794 d, a planet just 20 light-years away, is in the habitable zone of its star system. Could it support life?
- The Hebrew University
Israeli astronomers locate GJ 2126 b, a new planet orbiting an M-dwarf star, utilizing advanced HARPS technology to understand formation and evolution processes
- Avi Blizovsky
- 2 תגובות
A new breakthrough in cosmic mapping has revealed the structure of a giant filament, part of a vast cosmic web that connects galaxies.
- Avi Blizovsky
- 7 תגובות
The discovery of an extrasolar planet system at an unimaginable speed poses new research challenges in studying galaxy dynamics and the structure of intergalactic space.
- Avi Blizovsky
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Scientists have developed an innovative optical system designed to improve the sensitivity of the LIGO detector, the American gravitational wave detector that was a partner, along with the European Virgo, in the initial detection of gravitational waves and in many subsequent discoveries.
- Avi Blizovsky
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Researchers are uncovering secrets of our solar system by analyzing samples from the asteroid Bennu, some of the finest ever collected.
- Avi Blizovsky
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Two new planets discovered in the WASP-132 system are challenging the conventional understanding of planetary system formation. The discovery includes a nearby super-Earth alongside a hot Jupiter, alongside a distant ice giant, challenging the theory
- Avi Blizovsky
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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.
- Avi Blizovsky
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Peak star formation period, period of galactic chaos
- Avi Blizovsky
- 2 תגובות
A century ago, Edwin Hubble's discovery of the variable star V1 in the Andromeda Galaxy revealed a vast, expanding universe, becoming a turning point in our understanding of the cosmos.
- Avi Blizovsky
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- Avi Blizovsky
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The Hubble Space Telescope has revealed a quasar inhabiting a spiral galaxy – a surprising discovery that challenges existing understanding of the structure of quasars and the origin of their jets of matter.
Nitrogen-containing organic compounds that support life were discovered in abundance on the asteroid
- Avi Blizovsky
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- Avi Blizovsky
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Galaxy NGC 1086, located 47 million light-years away, is one of the closest galaxies to have an active galactic nucleus. The image was taken by the European Southern Observatory's Very Large Telescope.
- Avi Blizovsky
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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
- Avi Blizovsky
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- Avi Blizovsky
- 5 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
- Avi Blizovsky
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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
- Avi Blizovsky
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New research sheds light on icy oceanic worlds like Jupiter's moon Europa, focusing on a new thermodynamic concept called "cenotactics"
- Avi Blizovsky
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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
- The Voice of Science website - the Israel National Science Foundation
What can be learned from the shape of galaxies about the complex connections between different materials in the universe
- Avi Blizovsky
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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
- Avi Blizovsky
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New discoveries indicate that protoplanetary discs can survive longer in environments poor in heavy elements, contrary to previous assumptions
- Avi Blizovsky
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- Avi Blizovsky
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- Avi Blizovsky
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- Avi Blizovsky
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- Avi Blizovsky
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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
- Avi Blizovsky
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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