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Astronomy news
The dark energy pushing our universe apart may not be what it seems, scientists say
Distant, ancient galaxies are giving scientists more hints that a mysterious force called dark energy may not be what they thought.
Astronomy
7 hours ago
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The solar fire up close: Newly analyzed data offers first high-resolution view of the entire solar disk
The entire solar disk in unprecedented detail—this is shown by images of the visible surface of the sun, which researchers at the Max Planck Institute for Solar System Research have now created from 25 individual images ...
Astronomy
Nov 22, 2024
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2 million mph galaxy smash-up seen in unprecedented detail
A massive collision of galaxies sparked by one traveling at a scarcely-believable 2 million mph (3.2 million km/h) has been seen in unprecedented detail by one of Earth's most powerful telescopes.
Astronomy
Nov 22, 2024
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Veil of fiery gas revealed around the disk of Milky Way
Scientists may have finally hit upon the possible mysterious sources that have pumped heat and kept alive the fiery hot gas that has recently been detected surrounding the Milky Way but has so far remained unexplained.
Astronomy
Nov 22, 2024
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Scientists construct first complete energy spectrum of solar high-energy protons in Martian space
Scientists have constructed the first complete proton energy spectrum observed during an eruptive solar event in Martian space, deepening our understanding of the radiation environment around Mars.
Astronomy
Nov 22, 2024
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Ring around Tabby's star
This illustration shows a hypothetical uneven ring of dust orbiting KIC 8462852, also known as Boyajian's Star or Tabby's Star. The star has experienced unusual dips in brightness over a matter of days, as well as much subtler ...
Astronomy
Nov 22, 2024
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Video: Our sun is the star in a new simulation
NASA supercomputers are shedding light on what causes some of the sun's most complex behaviors. Using data from the suite of active sun-watching spacecraft currently observing the star at the heart of our solar system, researchers ...
Astronomy
Nov 21, 2024
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Hubble finds sizzling details about young star FU Orionis
In 1936, astronomers saw a puzzling event in the constellation Orion: the young star FU Orionis (FU Ori) became a hundred times brighter in a matter of months. At its peak, FU Ori was intrinsically 100 times brighter than ...
Astronomy
Nov 21, 2024
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A nearby supernova could end the search for dark matter
The search for the universe's dark matter could end tomorrow—given a nearby supernova and a little luck. The nature of dark matter has eluded astronomers for 90 years, since the realization that 85% of the matter in the ...
Astronomy
Nov 21, 2024
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Introducing 'UFO' galaxies—the Milky Way's dustier cousins
In a new study, a team of astrophysicists led by CU Boulder has set out to unravel the mysteries of UFOs—not the alien spacecraft, but a class of unusually large and red galaxies that researchers have nicknamed Ultra-red ...
Astronomy
Nov 21, 2024
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A technique for estimating the mass of gigantic filaments of dark matter
How do you weigh one of the largest objects in the entire universe? Very carefully, according to new research.
Astronomy
Nov 21, 2024
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Are fast radio bursts caused by interstellar objects crashing into neutron stars?
Every now and then, astronomers will detect an odd kind of radio signal. So powerful it can outshine a galaxy, but lasting only milliseconds. They are known as fast radio bursts (FRBs). When they were first discovered a couple ...
Astronomy
Nov 21, 2024
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Astronomers take first close-up picture of a star outside our galaxy
Located a staggering 160,000 light-years from us, the star WOH G64 was imaged thanks to the impressive sharpness offered by the European Southern Observatory's Very Large Telescope Interferometer (ESO's VLTI). The new observations ...
Astronomy
Nov 21, 2024
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Simulations with new k−ω model offer insights into massive star convection processes
Researchers at Yunnan Observatories of the Chinese Academy of Sciences simulated the evolution of massive stars with masses ranging from 50 to 150 solar masses during the nitrogen sequence Wolf-Rayet (WNL) star phase.
Astronomy
Nov 21, 2024
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How the sun heals after plasma eruption: New findings on coronal dimmings
A research team has presented a mechanism that explains how coronal dimmings—darkened, depleted areas on the sun caused by intense plasma eruptions—recover.
Astronomy
Nov 21, 2024
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Researchers find plausibility for sun-like stars around black holes, long believed to be impossible
Buried in the treasure trove of the Gaia catalog were two strange black hole systems. These were black holes orbiting sun-like stars, a situation that astronomers long thought impossible. Recently, a team has proposed a mechanism ...
Astronomy
Nov 21, 2024
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Chandra and Hubble tune into 'flame-throwing' Guitar Nebula
Normally found only in heavy metal bands or certain post-apocalyptic films, a "flame-throwing guitar" has now been spotted moving through space. Astronomers have captured movies of this extreme cosmic object using NASA's ...
Astronomy
Nov 20, 2024
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NASA's Swift reaches 20th anniversary in improved pointing mode
After two decades in space, NASA's Neil Gehrels Swift Observatory is performing better than ever thanks to a new operational strategy implemented earlier this year. The spacecraft has made great scientific strides in the ...
Astronomy
Nov 20, 2024
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It's been 100 years since we learned the Milky Way is not the only galaxy
On Sunday November 23, 1924, 100 years ago this month, readers perusing page six of the New York Times would have found an intriguing article, amid several large adverts for fur coats. The headline read: Finds Spiral Nebulae ...
Astronomy
Nov 20, 2024
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Predicting the next supernova explosion: New simulations reveal the physics of supernova shock breakout
Stars with masses between 10 and 30 times that of the sun, in their final evolutionary stages, form an iron core that ultimately collapses into a neutron star. This collapse releases a tremendous amount of gravitational potential ...
Astronomy
Nov 20, 2024
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Parasaurolophus pipes: Modeling the dinosaur's crest to study its sound
