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A quasar has taken part in the gravitational lensing of a background galaxy into an Einstein ring, which enables a remarkable measurement of the host galaxy lensing mass.
A statistical study of the variable X-ray flux from individual knots within jets supports a model that identifies a secondary population of electrons as the source of the synchrotron emission in active galactic nuclei jets.
Observations of scattered X-rays from the Central Molecular Zone suggest that Sagittarius A* was much more active in the past, and moreover provide an approximate map of the location of the illuminated molecular clouds in the Galactic Centre.
A rare observation of a quasar lens challenges the cold dark matter paradigm by accounting for anomalies with stochastic interactions of wave dark matter lenses.
The different roles of outflows in the removal of angular momentum from young stellar systems are becoming clearer with high-angular-resolution spectral-line studies.
A nearby galaxy provides a clue for resolving a long-standing issue in the way we measure elemental abundances from spectra, setting the stage for better interpreting the chemical evolution of galaxies across different cosmic epochs.
Why the outer regions of the solar atmosphere are much hotter than the underlying surface is a long-standing question. New high-resolution observations revise the role of waves in the energy transfer and offer an insight into the processes at play.
The mechanisms that generate magnetic fields in stars are complex, but computational models of dynamo action show how magnetic fields can be generated by extremely turbulent flows.
A group of amateur astronomers made key observations during the impact of the Double Asteroid Redirection Test (DART) spacecraft into asteroid Dimorphos — a pioneering experiment aimed at modifying the dynamical state of an asteroid.
Long-exposure spectra taken with the James Webb Space Telescope (JWST) reveal the most distant galaxies ever observed — back to a time when the Universe was only 2% of its present age.
The arrangement of dwarf galaxies in a thin plane surrounding the Milky Way has been thought to contradict the prevailing cosmological model of cold dark matter in the Universe. New work suggests that this arrangement may just be a temporary alignment, bringing our galaxy back into agreement with theoretical expectations once the radial distribution of satellites is taken into account.
A solar-cycle-length study reveals the detailed structure of the outer heliosphere. The boundary of our heliosphere is more dynamic and structured than previously known.
Forty-year monitoring of Jupiter reveals long-term oscillations and teleconnections across the north–south hemispheres and upper–lower atmospheres. This discovery has important implications for the atmospheres of exoplanets and brown dwarfs.
The transformations of energy that accompany solar magnetic activity have far-reaching ramifications beyond heliophysics. Understanding the dynamical chain is fundamental to assess habitability and the capacity for life elsewhere.
