Browse Physics

Differences in measurements of the expansion of the Universe may point to physics beyond the standard model of cosmology.

A moving gas cloud might help probe a population of black holes believed to inhabit the center of our galaxy.

A quantum gravity theory suggests that the cores of black holes may be a region of highly curved spacetime, rather than a singularity point with zero volume and infinite density.

According to a new model, galaxies may contain disks made of a specific type of dark matter that can interact more strongly than most dark matter.

The first results from the space-borne Alpha Magnetic Spectrometer confirm an unexplained excess of high-energy positrons in Earth-bound cosmic rays.

The IceCube neutrino telescope reports its most extensive search for neutrinos produced by dark matter annihilations in the Sun.

A new model shows that the nonuniform heating of ions in the solar wind may be explained by resonant interactions with a particular type of plasma wave.

Much can be learned about hypothetical particles called axions by studying the evolution of massive stars.

The H.E.S.S. Collaboration has put bounds on the flux of very-high-energy gamma rays that could be produced by annihilations of dark matter particles.

A precise mass measurement of an exotic zinc isotope gives new insight into the composition of the crust of neutron stars, the possible birthplace of heavy elements.

Contrary to the common view, the gravitational lensing from cosmic voids causes a brightening—not a dimming—of background objects, according to new calculations.

Cosmic gamma-ray bursts turn out to be polarized, which rules out the breaking of a fundamental symmetry down to the lowest limits ever observed.

Glitches in the rotation of pulsars cannot be explained by the conventional model of superfluid neutrons beneath the star’s crust.

Three major drawbacks to the ΛCDM dark matter model of the universe may be ameliorated if a proposed particle couples to dark matter and to neutrinos.

A new way of topologically labeling the pasta phases thought to exist in neutron stars could help researchers sort out how the phases contribute to star cooling.

A theoretical model of sunspots shows that their occasional disappearance may be due to a combination of fluctuations in the Sun’s polar magnetic field and outer layer flows.

New calculations of core-collapse supernovae show how bizarre nuclear structures—called pasta—develop in the dense core of a dying star.

Proposed measurements of arrays of pulsars could reveal the secrets of how supermassive black holes form, behave, and evolve.

A proposed explanation for puzzling features on the Moon involving small-scale magnetic fields has now been verified with a scaled-down version in the lab.

Quantum repeaters, devices that have been proposed for transporting encrypted information, could help collect light from distant telescopes in large area arrays.