Astronomy & Geophysics

Astronomy & Geophysics. It is a peer-reviewed scientific journal published by Oxford University Press for the Royal Astronomical Society (RAS). The journal serves as a key publication for news, reviews, and commentary on developments across the astronomical and geophysical sciences. Its content bridges the gap between specialist research papers and more general scientific news, aimed at researchers, educators, and interested professionals within the RAS community and beyond.

● Overview

The journal was established in 1997, succeeding the society's earlier news publication, *The Observatory*. It is edited by Sue Bowler and operates under the auspices of the Royal Astronomical Society, one of the world's oldest and most prestigious scientific societies in its field. *Astronomy & Geophysics* features a mix of invited review articles, conference reports, obituaries of notable scientists, and news on astronomical facilities like the Hubble Space Telescope and the Atacama Large Millimeter Array. It also covers significant events such as the launch of the James Webb Space Telescope and missions by NASA and the European Space Agency. The publication plays a crucial role in disseminating information about society affairs, including meetings held at Burlington House and awards like the Gold Medal of the Royal Astronomical Society.

● Historical Development

The origins of the journal lie in the communications of the Royal Astronomical Society, founded in 1820. For much of its history, the society published its primary research in the *Monthly Notices of the Royal Astronomical Society*, while news was covered in *The Observatory*, a magazine started in 1877. The decision to relaunch as *Astronomy & Geophysics* in 1997 reflected a modernized approach to covering the increasingly interdisciplinary nature of the society's interests, which encompass solar physics, planetary science, and Earth's magnetosphere. This period also saw the rise of major collaborative projects like the Sloan Digital Sky Survey and the construction of observatories such as the Very Large Telescope in Chile. The journal's evolution mirrors the expansion of the field from classical celestial mechanics to include astrobiology and helioseismology.

● Key Concepts and Methods

The journal's scope is defined by the core investigative techniques of its constituent fields. In astronomy, this includes methods like spectroscopy used by instruments on the Keck Observatory, photometry from surveys like Gaia (spacecraft), and interferometry employed by the Event Horizon Telescope. In geophysics, it covers seismological studies of Earth's core, geomagnetic measurements related to the Van Allen radiation belts, and gravitational field mapping by missions like GOCE. The journal frequently discusses computational methodologies such as N-body simulations for studying galaxy formation and numerical weather prediction models developed at institutions like the Met Office. It also highlights observational campaigns targeting phenomena from gamma-ray bursts detected by the Fermi Gamma-ray Space Telescope to auroral activity studied during the International Geophysical Year.

● Major Subfields

Content within *Astronomy & Geophysics* is organized around several well-established sub-disciplines. These include stellar astrophysics, covering topics from supernova remnants like the Crab Nebula to stellar evolution in open clusters; galactic astronomy, examining structures like the Milky Way's Sagittarius A*; and extragalactic astronomy, reporting on discoveries from the Hubble Deep Field and galaxies such as Andromeda Galaxy. In geophysics, major areas are seismology, with research on events like the 2004 Indian Ocean earthquake, geomagnetism, studying reversals recorded in the Brunhes–Matuyama reversal, and atmospheric physics, involving work on the ozone layer and phenomena like noctilucent clouds. The journal also dedicates significant space to planetary science, featuring findings from missions to Mars, Jupiter, and Saturn by probes like Cassini–Huygens and Juno (spacecraft).

● Interdisciplinary Connections

A defining characteristic of the journal is its emphasis on the intersections between astronomy, geophysics, and other scientific domains. This is evident in coverage of space weather, which connects solar flares observed by the Solar Dynamics Observatory to impacts on Earth's ionosphere and technological systems, a concern for organizations like NOAA. The field of astrochemistry links observations from the Herschel Space Observatory to laboratory work at institutions like the Max Planck Institute. Similarly, archaeoastronomy studies sites such as Stonehenge and Chichen Itza, while the study of impact craters like Chicxulub crater ties asteroid research to the Cretaceous–Paleogene extinction event. The journal also explores the use of geophysical techniques in planetary geology and the application of astronomical data to cosmological models like Lambda-CDM model.

● Current Research and Challenges

Recent issues of the journal focus on forefront scientific questions and technological endeavors. A major theme is the search for exoplanets and biosignatures by missions such as the Transiting Exoplanet Survey Satellite and the upcoming PLATO (spacecraft). In cosmology, it reports on tensions in the Hubble constant measurements between the Planck (spacecraft) data and observations from the Hubble Space Telescope, and on the nature of dark matter and dark energy. Challenges in geophysics include understanding the dynamics of Earth's inner core and improving forecasts for space weather events that could disrupt satellites and power grids. The journal also covers the development of next-generation facilities, including the Square Kilometre Array, the Extremely Large Telescope, and the Vera C. Rubin Observatory, while addressing issues of light pollution and the sustainability of space activities in collaboration with bodies like the United Nations Office for Outer Space Affairs.