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Astronomy Sep 28, 2026

Hydrogen's distant glow opens new way to investigate dark energy

The Canadian Hydrogen Intensity Mapping Experiment (CHIME) has shown for the first time that it can detect the faint glow of hydrogen gas from deep in the universe's past using only its own data.

Astronomy Sep 28, 2026

Testing tiny telescope robots reveals design changes that could improve galaxy maps

Astronomers have cataloged billions of stars and hundreds of billions of galaxies. We have found thousands of planets orbiting stars. We can also map where galaxies sit and trace how the universe changes over time.

Astronomy Sep 28, 2026

A tiny stellar system may be a 'satellite of a satellite'

Astronomers using data from the Euclid space telescope have discovered an exceptionally faint stellar system near the Fornax dwarf galaxy. Called Fornax-7, it appears to contain only about 170 times the mass of the sun in ...

Astronomy Sep 27, 2026

Astronomers discover a radio galaxy with evidence of four separate jet outbursts

Astronomers have identified what may be the first example of a new class of radio galaxy, one whose central black hole appears to have launched powerful jets on four separate occasions. High-resolution observations with the ...

Astronomy Sep 26, 2026

Black hole jets reach far beyond galaxies' visible edges, potentially deciding their fate

Galaxies are enormous and hold hundreds of billions of stars. These stars form from cold, dense gas. Every large galaxy, including the Milky Way, is wrapped in a huge envelope of gas called the circumgalactic medium, or CGM. ...

Astronomy Sep 24, 2026

Faint young stars reveal spiral galaxy Messier 74 may be twice as large as thought

Astronomers have discovered a faint population of young stars extending far beyond the known edge of the nearby spiral galaxy Messier 74. The finding suggests the galaxy is nearly twice as large as previously measured. The ...

Astrobiology Sep 24, 2026

JWST finds early galaxies were already seeding the universe with heavy elements

When the universe was still in its infancy—only 500 million years after the Big Bang, or about 3% of its current age—some of the universe's earliest stars and galaxies had already formed. Astronomers have long predicted that ...

Astronomy Sep 23, 2026

Astrophysicists use wave simulations to open a new window on dark matter

Astrophysicists from The University of Hong Kong (HKU), working with a research team led by Beijing Normal University (BNU), have developed a more physically realistic approach to testing how ultralight, or "fuzzy," dark ...

General Physics Sep 23, 2026

Central surface density of dark matter agrees with the prediction of a new theory of gravity

A researcher from Sejong University has used a new theory of gravity proposed by Erik Verlinde to predict the observed central surface density of dark matter. The study was published in Physics of the Dark Universe on Sept. ...

Astronomy Sep 23, 2026

Aiming at number 9: CASPAR targets fluorine in new science run

The Compact Accelerator System for Performing Astrophysical Research (CASPAR) recreates conditions inside stars to study how elements are made. The experiment recently restarted with a new target—the ninth element on the ...

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