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Special Issues

Universe 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 polices and Guest Editor responsibilities can be found here. For any inquiries related to a Special Issue, please contact the Editorial Office.

Open for Submission

Challenges in Evolutionary Mechanisms in Nearby Galaxies: Resolving Problems from Dwarfs to BCGs

Guest Editor: Hassen Yesuf
Viewed by 79

Deadline: 31 December 2026

Open for Submission

Supernova Remnants in the Multi-Wavelength Era

Guest Editor: Daniel Patnaude
Viewed by 78

Deadline: 1 September 2026

Open for Submission

Active Galactic Nuclei: Accretion and Supermassive Black Holes

Guest Editors: Edi Bon, Nataša Bon
Viewed by 54

Deadline: 31 July 2026

Open for Submission

Advances in Studies of Galaxies at High Redshift

Guest Editor: Krisztina Éva Gabányi
6 articles | Viewed by 7,972

Deadline: 30 April 2026

Open for Submission

Multi-wavelength Properties of Active Galactic Nuclei

Guest Editor: Stefano Vercellone
5 articles | Viewed by 3,955

Deadline: 31 March 2026

Open for Submission

Seyfert Galaxies: Probing the Active Nuclei of Nearby Galaxies

Guest Editor: Oli Luiz Dors
Viewed by 783

Deadline: 31 March 2026

Closed

Insights into the Magellanic Clouds: From Star Formation to Galactic Dynamics

Guest Editor: Noelia E. D. Noël
Viewed by 199

Deadline: 1 December 2025

Closed

A Multimessenger View of Supermassive Black Holes and the Quasar Main Sequence

Guest Editors: Ascension Del Olmo, Paola Marziani
8 articles | Viewed by 21,161

Deadline: 1 June 2025

Closed

Universe: Feature Papers 2024—"Galaxies and Clusters"

Guest Editor: Mauro D’Onofrio
12 articles | Viewed by 20,027

Deadline: 31 December 2024

Closed

Black Holes and Relativistic Jets

Guest Editors: Ioana Dutan, Nicholas R. MacDonald
11 articles | Viewed by 38,211

Deadline: 30 September 2022

Closed

Multi-Messengers of Black Hole Accretion and Emission

Guest Editors: Xiang Liu, Alok Chandra Gupta
8 articles | Viewed by 19,477

Deadline: 31 August 2022

Closed

Recent Advances in Infrared Galaxies and AGN

Guest Editors: Anna Sajina, Asantha R. Cooray
7 articles | Viewed by 31,981

Deadline: 15 April 2022

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Universe - ISSN 2218-1997