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Astronomy news
Record-energy neutrino may have begun its journey in blazars
Three years ago, in the waters of the Mediterranean Sea, the passage of an "ultra-energetic" cosmic neutrino was observed—the most energetic ever detected. The event drew international attention from the scientific community ...
Astronomy
1 hour ago
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Multi-wavelength observations track bright gamma-ray blazar's three-year cycle
By analyzing the data from various space observatories and ground-based telescopes, European astronomers have performed a multiwavelength study of a bright gamma-ray blazar known as S5 1044+71. The new study, published Feb. ...
An interstellar comet packed with alcohol? What ALMA found in 3I/ATLAS
Comet 3I/ATLAS continues to make astonishing headlines, thanks to new findings from astronomers using the Atacama Large Millimeter/submillimeter Array (ALMA). This new research reveals that 3I/ATLAS is packed with an unusually ...
Astronomy
5 hours ago
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The coldest 'stars' in the galaxy might actually be alien megastructures
Ever since physicist Freeman Dyson first proposed the concept in 1960, the "Dyson sphere" has been the holy grail of techno-signature hunters. A highly advanced civilization could build a "sphere" (or, in our more modern ...
Astronomy
Mar 7, 2026
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V615 Vul shows rare hybrid nova signature after rapid two-day rise
Italian astronomers have performed extensive spectroscopic monitoring of a recently discovered nova known as Vulpeculae 2024, also known as V615 Vul. Results of the new observations, presented in a paper published in the ...
Stars like our sun may maintain the same rotation pattern for life, contrary to 45 years of theoretical predictions
Researchers at Nagoya University in Japan have conducted the most detailed simulation of the interior of stars and disproved a theory scientists have believed for 45 years: that stars switch their rotation patterns as they ...
Astronomy
Mar 6, 2026
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What's inside neutron stars? New model could sharpen gravitational-wave 'tide' clues
Neutron stars harbor some of the most extreme environments in the universe: their densities soar to several times those of atomic nuclei, and they possess some of the strongest gravitational fields of any known objects, surpassed ...
Astronomy
Mar 6, 2026
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Gravitational waves reveal hidden structure of galactic centers
A new study published in Nature Astronomy indicates that the dense, star- and dark-matter–rich environments around supermassive black hole binaries pack on the order of a million solar masses into each cubic parsec. The ...
Missing technosignatures? Turbulent plasma may blur ultra-narrow signals before they leave their home star systems
A new study by researchers at the SETI Institute suggests that stellar "space weather" could make radio signals from extraterrestrial intelligence harder to detect. Stellar activity and plasma turbulence near a transmitting ...
Astronomy
Mar 5, 2026
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Why are some stars always visible while others come and go with the seasons?
As a space scientist, every time I go outside with my family, I tell my children to look up at the sky. The front door of our home looks southeast, and on winter nights the constellation Orion hangs majestically just above ...
Astronomy
Mar 5, 2026
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Binary star population of open cluster NGC 2158 explored with Hubble
Astronomers have analyzed the images collected by the Hubble Space Telescope (HST) to investigate a galactic open cluster known as NGC 2158. Results of the study, published Feb. 25 on the arXiv pre-print server, provide essential ...
New LVK catalog adds 128 gravitational-wave candidates, more than doubling detections
When the densest objects in the universe collide and merge, the violence sets off ripples, in the form of gravitational waves, that reverberate across space and time, over hundreds of millions and even billions of years. ...
Astronomy
Mar 5, 2026
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How old is the universe? The oldest stars give us a clue
Researchers from the University of Bologna and the Leibniz Institute for Astrophysics Potsdam (AIP) along with other institutes have proposed a new way to address the Hubble tension by comparing estimates of the universe's ...
Astronomy
Mar 5, 2026
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What goes on inside a massive star before it explodes as a supernova?
When most people think of a supernova, they're thinking of a Type II core-collapse supernova. These are massive stars that have reached the end of their time on the main sequence. They've used up their supply of hydrogen ...
Astronomy
Mar 5, 2026
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ESA's Mars orbiters watch solar superstorm hit the red planet
What happens when a solar superstorm hits Mars? Thanks to the European Space Agency's Mars orbiters, we now know: glitching spacecraft and a supercharged upper atmosphere.
Astronomy
Mar 5, 2026
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What Geminga's 100 TeV cutoff may mean for cosmic-ray acceleration in the Milky Way
For the first time, the Tibet ASγ Experiment has successfully measured magnetohydrodynamic (MHD) turbulence on scales below one parsec (approximately 3.3 light-years) within the gamma-ray halo surrounding the Geminga pulsar ...
Astronomy
Mar 4, 2026
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JWST reveals surprising secrets in Jupiter's northern lights
An international team of scientists, led by a Ph.D. researcher from Northumbria University, has made further discoveries about a spectacular feature of Jupiter's northern lights, revealing a never-before-seen temperature ...
Astronomy
Mar 4, 2026
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Astronomers discover TOI-5734 b, a hot sub-Neptune twice Earth's size
Using the Transiting Exoplanet Survey Satellite (TESS) and High Accuracy Radial velocity Planet Searcher for the Northern Hemisphere (HARPS-N), an international team of astronomers has discovered a hot sub-Neptune exoplanet ...
Hubble and Euclid zoom into cosmic eye
For this month's ESA/Hubble Picture of the Month, NASA/ESA's Hubble Space Telescope is joined by ESA's Euclid to create a new view of the most visually intricate remnants of a dying star: the Cat's Eye Nebula, also known ...
Astronomy
Mar 3, 2026
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Four decades of data give unique insight into the sun's inner life
Scientists have analyzed more than 40 years of astronomical data to uncover evidence that the sun's internal structure subtly changes from one solar cycle minimum to the next. Publishing their findings in Monthly Notices ...
Astronomy
Mar 3, 2026
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Quantum entanglement offers route to higher-resolution optical astronomy
