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Giant Swirling Waves at Edge of Jupiter's Magnetosphere

July 17, 2023 —A team has found that NASA's Juno spacecraft orbiting Jupiter frequently encounters giant swirling waves at the boundary between the solar wind and Jupiter's magnetosphere. The waves are an important process for transferring energy and mass from the solar wind, a stream of charged particles emitted ...

James Webb Telescope Catches Glimpse of Possible First-Ever 'Dark Stars'

July 13, 2023 —Three bright objects initially identified as galaxies in observations from the James Webb Space Telescope might actually represent an exotic new form of star. If confirmed, the discovery would also shed light on the nature of dark ...

Webb Celebrates First Year of Science With Close-Up on Birth of Sun-Like Stars

July 12, 2023 —From our cosmic backyard in the solar system to distant galaxies near the dawn of time, NASA's James Webb Space Telescope has delivered on its promise of revealing the universe like never before in its first year of science operations. To celebrate ...

Reinventing Cosmology: New Research Puts Age of Universe at 26.7 -- Not 13.7 -- Billion Years

July 11, 2023 —Our universe could be twice as old as current estimates, according to a new study that challenges the dominant cosmological model and sheds new light on the so-called 'impossible early galaxy ...

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Webb Telescope Detects Most Distant Active Supermassive Black Hole

July 6, 2023 —Researchers have discovered the most distant active supermassive black hole to date with the James Webb Space Telescope (JWST). The galaxy, CEERS 1019, existed about 570 million years after the big ...

Webb Locates Dust Reservoirs in Two Supernovae

July 5, 2023 —Researchers have made major strides in confirming the source of dust in early galaxies. Observations of two Type II supernovae, Supernova 2004et (SN 2004et) and Supernova 2017eaw (SN 2017eaw), have ...

Quasar 'Clocks' Show Universe Was Five Times Slower Soon After the Big Bang

July 3, 2023 —Quasars are the supermassive black holes at the centres of early galaxies. Scientists have unlocked their secrets to use them as 'clocks' to measure time near the beginning of the ...

Astrophysicists Propose a New Way of Measuring Cosmic Expansion: Lensed Gravitational Waves

July 1, 2023 —The universe is expanding; we've had evidence of that for about a century. But just how quickly celestial objects are receding from each other is ...

First 'Ghost Particle' Image of Milky Way

June 29, 2023 —Scientists have revealed a uniquely different image of our galaxy by determining the galactic origin of thousands of neutrinos -- invisible 'ghost particles' which exist in great quantities but ...

Earliest Strands of the Cosmic Web

June 29, 2023 —Galaxies are not scattered randomly across the universe. They gather together not only into clusters, but into vast interconnected filamentary structures with gigantic barren voids in between. This ...

Gravitational Waves from Colossal Black Holes Found Using 'Cosmic Clocks'

June 29, 2023 —You can't see or feel it, but everything around you -- including your own body -- is slowly shrinking and expanding. It's the weird, spacetime-warping effect of gravitational waves passing through ...

Starlight and the First Black Holes: Researchers Detect the Host Galaxies of Quasars in the Early Universe

June 28, 2023 —For the first time, the James Webb Space Telescope has revealed starlight from two massive galaxies hosting actively growing black holes -- quasars ...

Einstein and Euler Put to the Test at the Edge of the Universe

June 22, 2023 —宇宙是一个独特的实验室测试laws of physics, in particular those of Euler and Einstein. Euler described the movements of celestial objects, while Einstein described the way in ...

Never-Before-Seen Way to Annihilate a Star

June 22, 2023 —Astronomers studying a powerful gamma-ray burst, may have detected a never-before-seen way to destroy a star. Unlike most GRBs, which are caused by exploding massive stars or the chance mergers of ...