Reports of four galaxies from when the Universe was 2% of its current age are as exciting as they are puzzling — leading scientists to question our galaxy formation and evolution models.

High-resolution simulations of the small-scale dynamo (SSD) mechanism, with close-to-realistic parameters of deep stellar convection zones, indicate that SSDs are possible in the Sun and other cool stars, in contrast to previous theoretical expectations.

JWST mid-infrared images of the nearby star Fomalhaut reveal a complex system of dusty rings and disks, created as debris from planetesimal collisions. These structures suggest the presence of a complex and probably dynamically active planetary system.

ERIS takes over from and improves upon the key functionalities of the VLT’s former NACO and SINFONI instruments.

A Bayesian approach to comparing the effects of accretion disks, dark matter or clouds of ultra-light bosons on gravitational waveforms from a black hole binary system concludes that detectors such as LISA can distinguish between these environments.

A rare case of a quasar acting as a gravitational lens allows a precise determination of the mass of the quasar’s host galaxy and offers a new path to studying the connections between supermassive black holes and their host galaxies.

Strong X-ray emission from a population of radio jets shows variability that supports a model of synchrotron emission by a secondary population of electrons boosted to teraelectronvolt energies within a small volume of a jet.

High-resolution observations reveal fibril motions in the chromospheric umbra of a sunspot, providing a potential energy source for coronal heating.

An analysis of 1,055 planets around main sequence stars identifies three subsamples of star–planet synchronization: subsynchronized, dominant for periods shorter than 6.2 days; supersynchronized, for periods longer than 13.5 days; and a transitional regime in between. Synchronized systems are a minority, contrary to eclipsing binaries.

Torsional waves extend into the deep interior of Jupiter where they can modulate the outgoing heat flux and couple with Jupiter’s weather layer to generate the observed quasi-periodic oscillations in the cloud deck. Such waves can be used to explore the interior structure of gas giants.

A year of science from the Imaging X-ray Polarimetry Explorer has brought results that are stimulating a re-examination of theoretical models of astrophysical sources.

Reports of four galaxies from when the Universe was 2% of its current age are as exciting as they are puzzling — leading scientists to question our galaxy formation and evolution models.

A change in policy that has allowed the public to use the Thiruvananthapuram Astronomical Observatory has brought about a consistent increase in visitors that is being spurred on by recent celestial events, such as the appearance of comet C/2022 E3 (ZTF).