Special Issues

Galaxies publishes Special Issues to create collections of papers on specific topics, with the aim of building a community of authors and readers to discuss the latest research and develop new ideas and research directions. Special Issues are led by Guest Editors, who are experts on the topic and all Special Issue submissions follow MDPI's standard editorial process. The journal’s Editor-in-Chief and/or designated Editorial Board Member will oversee Guest Editor appointments and Special Issue proposals, checking their content for relevance and ensuring the suitability of the material for the journal. The papers published in a Special Issue will be collected and displayed on a dedicated page of the journal’s website. Further information on MDPI's Special Issue policies and Guest Editor responsibilities can be found here. For any inquiries related to a Special Issue, please contact the Editorial Office.

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Challenges for Third-Generation Gravitational Wave Detectors and Beyond
edited by , and Valeria Sequino
submission deadline 15 Sep 2025 | 7 articles | Viewed by 10771 | Submission Open
Keywords: gravitational waves; third-generation GW detectors; space-based GW detectors; ultra-high-frequency GW detectors
From Tides to Waves: Understanding the Formation Mechanisms of Galactic Spirals
edited by Aleksandr Mosenkov
submission deadline 15 Sep 2025 | 5 articles | Viewed by 4394 | Submission Open
Keywords: spiral arms; density waves; galactic dynamics; star formation; tidal interactions; pitch angle; dark matter; galactic morphology; radial profiles; secular evolution
Foundations of MHD Turbulence: Theories, Methods and Observations
edited by
submission deadline 15 Sep 2025 | Viewed by 281 | Submission Open
Keywords: MHD turbulence; plasma astrophysics; data analysis; heliosphere; interstellar medium
The Observation and Detection of Dusty Star-Forming Galaxies
edited by Marcella Massardi and
submission deadline 15 Oct 2025 | 6 articles | Viewed by 13742 | Submission Open
Keywords: dusty galaxies; submillimeter galaxies; ALMA; SED; multi-wavelength; galaxy observations; galaxy detection
Alternative Interpretations of Observed Galactic Behaviors submission deadline 15 Nov 2025 | 2 articles | Viewed by 6561 | Submission Open
Keywords: observations; theory; hypothesis; scientific method; debate; consensus
Origins and Models of Planetary Nebulae, 2nd Edition
edited by and Xuan Fang
submission deadline 15 Nov 2025 | Viewed by 165 | Submission Open
Keywords: planetary nebulae; nebulae around massive stars; nova remnants; symbiotic stars; shaping mechanisms; binary stars
The Evolution of Gravitational Wave Detectors
edited by and Mattia Boldrini
submission deadline 31 Dec 2025 | Viewed by 212 | Submission Open
Keywords: gravitational waves; gravitational wave detectors; optics; laser interferometry; mechanics; control theory
Multiwavelength Variability and Unstable Processes in High-Energy-Peaked BL Lacertae Objects
edited by and Stefano Vercellone
submission deadline 31 Dec 2025 | Viewed by 97 | Submission Open
Keywords: blazars; bl lacertae objects; blazar variability; multi-wavelength; acceleration mechanisms; emission models; jet instabilities
Physics of Black Hole Spins
edited by , Alejandro Cárdenas-Avendaño, Delilah Gates and Javier Garcia
submission deadline 31 Dec 2025 | Viewed by 32 | Submission Open
Keywords: black hole spin; X-ray spectroscopy; gravitational waves; horizon-scale imaging; multimessenger astrophysics; waveform modeling; black hole binaries; spin evolution
Neutron Capture Processes in the Universe
edited by , Luciano Piersanti and Diego Vescovi
submission deadline 30 Jan 2026 | Viewed by 399 | Submission Open
Keywords: stellar nucleosynthesis; stellar evolution; multimessenger astronomy; neutron capture processes
Theoretical and Observational Approaches to the Hubble Tension in Cosmology
edited by and Harry Desmond
submission deadline 31 Jan 2026 | Viewed by 470 | Submission Open
Keywords: cosmology; distance scale; supernovae; galaxies; variable stars; stellar populations; recombination
Study on Contact Binary Stars
edited by Kai Li and Atila Poro
submission deadline 15 Feb 2026 | 1 articles | Viewed by 833 | Submission Open
Keywords: contact binary; O’ Connell effect; shortperiod cutoff; minimum mass ratio; orbital period change; light curve analysis; radial velocity curve
Recent Advances in Radio Astronomy
edited by
submission deadline 15 Feb 2026 | Viewed by 822 | Submission Open
Keywords: instrumentation; techniques; radio continuum; radio line; submillimetre; surveys; time domain
Stellar Spectroscopy, Molecular Astronomy and Atomic Astronomy
edited by Fan Liu
submission deadline 1 Mar 2026 | 5 articles | Viewed by 2043 | Submission Open
Keywords: stellar spectroscopy; stars and planetary systems; Galactic chemical evolution; atmospheres of stars; elemental abundances of stars; interstellar medium
Strong Gravitational Lens Modeling
edited by Stefan Schuldt
submission deadline 15 Mar 2026 | Viewed by 64 | Submission Open
Keywords: strong lens mass modeling (full wavelength range); galaxy-scale; group-scale; cluster-scale; automated modeling; high-precision modeling; machine learning; lens confirmation; mass-sheet degeneracy; dark matter; cosmology
Astrophysical Magnetohydrodynamics, Plasma Physics and Cosmic Rays
edited by Yue Hu and Ka Wai Ho
submission deadline 15 Mar 2026 | Viewed by 10 | Submission Open
Keywords: astrophysics; MHD turbulence; magnetism; plasama; cosmic ray; numerical simulations; multi-phase media; magnetic reconnection
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