Measurements of millions of galaxies suggest that dark energy changes over time and is more complicated than previously thought. Read More »
The Euclid satellite released its first trove of galaxy data based on seven days of deep-field observations in three sky areas. Read More »
The S8 tension—a disagreement between cosmic-clumpiness measurements—is not going away, according to a new analysis of galaxy lensing data. Read More »
Scientists have devised a way to use current gravitational-wave detectors to observe permanent deformations of spacetime caused by certain supernovae. Read More »
Low-frequency radio observations could allow researchers to distinguish among several dark matter models, thanks to dark matter’s influence on the early Universe. Read More »
An asteroid-mass primordial black hole flying near a planet could perturb the planet’s orbit by a detectable amount. Read More »
An analysis of gravitational data from the LIGO detector sets new limits on a wave-like form of dark matter called scalar-field dark matter. Read More »
A correlation between two astronomical observables reveals the influence of visible matter on a universe dominated by dark matter. Read More »
Theorists explain why cosmic inflation might appear to be driven by a single inflaton field, even if it had actually been driven by two or more such fields. Read More »
Observing gravitational-wave memory may help physicists test general relativity predictions about large-scale symmetries in the fabric of spacetime. Read More »
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