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Astronomy news
Betelgeuse's elusive companion star: Siwarha's 'wake' detected
Using new observations from NASA's Hubble Space Telescope and ground-based observatories, astronomers have tracked the influence of a recently discovered companion star, Siwarha, on the gas around Betelgeuse. The research, ...
Astronomy
12 hours ago
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Active solar region observed for record 94 days
In May 2024, the strongest solar storm in twenty years raged. An international team led by ETH Zurich observed it. Their findings are now helping to improve space weather forecasts.
Astronomy
13 hours ago
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Hubble examines Cloud-9, first of new type of object
A team using the NASA/ESA Hubble Space Telescope has uncovered a new type of astronomical object—a starless, gas-rich, dark-matter cloud that is considered a "relic" or remnant of early galaxy formation. Nicknamed "Cloud-9," ...
Astronomy
13 hours ago
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Astronomers reveal hidden lives of the early universe's ultramassive galaxies
An international team of astronomers has uncovered multiple evolutionary paths for the universe's most massive galaxies. Observations of ultramassive galaxies, each containing more than 100 billion stars, show that less than ...
Astronomy
14 hours ago
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Ultramassive black holes and their galaxies: A matter of scale
Nearly every galaxy has a supermassive black hole in its core. Whether the black hole forms first and then the galaxy around it—or the other way around—is still a matter of some debate, but we know the evolution of both ...
Astronomy
16 hours ago
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XRISM gives sharpest-ever glimpse at growth of a rapidly-spinning black hole
Astronomers have obtained the sharpest-ever X-ray spectrum of an iconic active galaxy, providing the most accurate, precise view ever obtained of the extreme relativistic effects imprinted onto the spacetime around a supermassive ...
Astronomy
16 hours ago
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The ambitious plan to spot habitable moons around giant planets
So far, humanity has yet to find its first "exomoon"—a moon orbiting a planet outside of the solar system. But that hasn't been for lack of trying. According to a new paper by Thomas Winterhalder of the European Southern ...
Astronomy
16 hours ago
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A neighboring vista of stellar birth
This ESA/Hubble picture highlights another view of a distant stellar birthplace. Captured in a parallel field to a recently released image, this scene reveals a neighboring region of the N159 star-forming complex in the Large ...
Astronomy
17 hours ago
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Earliest, hottest galaxy cluster gas on record challenges cosmological models
An international team of astronomers led by Canadian researchers has found something the universe wasn't supposed to have: a galaxy cluster blazing with hot gas just 1.4 billion years after the Big Bang, far earlier and hotter ...
Astronomy
18 hours ago
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Why astronomy needs a giant in the Canary Islands
Size matters when it comes to telescopes. The bigger they are, the farther they can see. Prioritizing constructing large ones is therefore high on the priority list for many observational organizations. But doing so comes ...
Astronomy
18 hours ago
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Solar flares and stellar flares hit differently
The sun is not only our closest stellar neighbor, it's also the star we understand the most. As we've observed it over the centuries, we've learned that the sun is not an immortal constant. It goes through active and quiet ...
Astronomy
20 hours ago
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Galactic globular cluster loses stars through tidal stripping, observations reveal
Using the Anglo-Australian Telescope (AAT), astronomers have observed a nearby galactic globular cluster known as NGC 6569. Results of the observational campaign, published December 22 on the arXiv preprint server, indicate ...
Astronomers measure both mass and distance of a rogue planet for the first time
While most planets that we are familiar with stick relatively close to their host star in a predictable orbit, some planets seem to have been knocked out of their orbits, floating through space free of any particular gravitational ...
Curiosity sends holiday postcard from Mars
Team members working with NASA's Curiosity Mars rover created this "postcard" by commanding the rover to take images at two times of day on Nov. 18, 2025, spanning periods that occurred on both the 4,722nd and 4,723rd Martian ...
Astronomy
Jan 2, 2026
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When stars fail to explode
Many stars die spectacularly when they explode as supernovae. During these violent explosions, they leave behind thick, chaotic clouds of debris shaped like cauliflowers. But supernova remnant Pa 30 looks nothing like that.
Astronomy
Jan 2, 2026
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Could TRAPPIST-1's seven worlds host moons?
Forty light-years away, seven Earth-sized planets orbit around a dim red dwarf star in one of the most tightly packed planetary systems ever discovered. The TRAPPIST-1 system has captivated astronomers since 2017, with three ...
Astronomy
Jan 2, 2026
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Study unveils the dual nature of a young stellar object
Astronomers from the Aryabhatta Research Institute of Observational Sciences (ARIES) in India and elsewhere have conducted a long-term photometric and spectroscopic study of a young stellar object known as V1180 Cassiopeiae. ...
Searching for light dark matter by tracking its direction with quantum sensors
Dark matter is an elusive type of matter that does not emit, absorb or reflect light, interacting very weakly with ordinary matter. These characteristics make it impossible to detect using conventional technologies used by ...
Finding runaway stars to help map dark matter in the Milky Way
Hypervelocity stars have, since the 1920s, been an important tool that allows astronomers to study the properties of the Milky Way galaxy, such as its gravitational potential and the distribution of matter. Now astronomers ...
Experiment nixes 'sterile' neutrino explanation of previous unexpected measurements
Experimental particle physicists working at the MicroBooNE experiment at Fermilab National Accelerator Laboratory have found evidence against the existence of a "sterile" type of neutrino hypothesized to be responsible for ...
Astronomy
Jan 1, 2026
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Other news
Study overturns long-held model of how plants coordinate immune responses
Making sense of quantum gravity in five dimensions
Second spider-parasitic mite species described in Brazil
Discoveries rewrite how some minerals form and dissolve
Hidden molecular switch controls taste, metabolism and gut function
Understanding fuel cell catalysts: Study reveals shifting rate-limiting steps
