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Our Collection on dwarf galaxies brings together a series of articles that showcase the breadth of research in this field, with links to galaxy formation and evolution, cosmology, dark matter and the interstellar medium.
Writing a good scientific paper is a challenging task that benefits from training and practice. In this second Perspective in a short series, the authors share their wisdom on the process of writing a manuscript, from the most appropriate content for each section to the language to use.
Writing a good scientific paper is a challenging task that becomes easier with training and practice. Here the authors share their wisdom on useful preparations to make before starting to write, and a companion Perspective provides advice on the actual writing process.
A bright patch in the Fermi bubbles, previously attributed to a jet launched by the Galaxy’s central black hole, is actually due to gamma-ray emission by millisecond pulsars in a background, satellite galaxy of the Milky Way.
A close look at microcraters on a lunar grain from a Chang’e-5 returned sample shows evidence of the formation of nanophase metallic iron (np-Fe0) via disproportionation of Fe2+ triggered by secondary impacts, with no space weathering contribution from the solar wind.
About 0.5% by volume of the Ryugu particle C0009 is made up of anhydrous silicates, mostly olivines, despite the extensive aqueous alteration of its parent body. Such aggregates, rich in 16O, were present in Ryugu’s protolith and survived fluid activity.
Light pollution is a growing problem affecting the night sky. This Review takes a comprehensive look at the factors contributing to elevated brightness at night, the measurement techniques and the ongoing assessment of sky quality.
A new selection method is used to obtain a sample of dual/lensed active galactic nuclei (AGN) candidates with sub-arcsec separations from Gaia data. This substantially increases the known number of dual AGNs, with implications for studies of in-spiralling supermassive black holes.
The Galactic Centre should host up to 10% of the newest stars in the Galaxy, but the only two known young star clusters in the Galactic Centre account for less than 10% of this expected mass. A high-angular-resolution near-infrared survey of the Sgr B1 region finds another 25% of the expected mass of very young stars.
Surface-energy effects, such as the Kelvin effect, that regulate the formation of ice determine the observed abundance, distribution and evolution of CO in protoplanetary disks.
A model of CO ice formation in protoplanetary disks shows that surface energy effects, such as the Kelvin effect, in ice nucleation and condensation must be considered to reproduce the observed distribution, abundances and evolution of gaseous CO.
Four researchers — Nicolas Bonne, Cheryl Fogle-Hatch, Garry Foran and Enrique Perez Montero — discuss the accessibility challenges in astronomy research, education and outreach for persons who are blind or visually impaired. Solutions to these challenges create innovative data analysis methods for all astronomers.
The use of sound to represent astronomical data complements visual analysis tools and makes astronomy more accessible. This Perspective presents a growing number of projects with increasing applications in research, education and outreach across astronomy.
The sample taken from carbonaceous asteroid Ryugu and brought back to Earth by the Hayabusa2 spacecraft contains outer Solar System-derived materials uncontaminated by terrestrial processes. Even CI carbonaceous chondrites, despite their closeness to solar abundances, are not pristine.
The precise location of megamaser emission regions in galactic accretion disks has been challenging to pinpoint. Now with interferometric observations leveraging baselines larger than the Earth’s diameter, the missing information is getting closer and closer.