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 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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Mechanisms Behind Black Holes and Relativistic Jets
edited by
submission deadline 19 Jun 2026 | Viewed by 230 | Submission Open
Keywords: black holes; relativistic jets; active galactic nuclei; gamma-ray bursts; numerical simulations
(This special issue belongs to the Section Compact Objects)
Celebrating the 110th Anniversary of General Relativity: Advances, Challenges and Perspectives submission deadline 30 Jun 2026 | 10 articles | Viewed by 5702 | Submission Open
Keywords: general relativity; 110th anniversary; gravitation; cosmology; challenges in gravitational physics
(This special issue belongs to the Section Gravitation)
Search for New Physics Through Combined Approaches
edited by Yang Zhang and
submission deadline 30 Jun 2026 | 2 articles | Viewed by 2257 | Submission Open
Keywords: beyond standard model physics; grand unified theory; collider physics; Higgs physics; electroweak precision measurements; dark matter; electroweak phase transition; gravitational wave 
(This special issue belongs to the Section High Energy Nuclear and Particle Physics)
Ultralight Bosonic Dark Matter: Theoretical Developments and Experimental Searches
edited by Dmitry Budker, Hendrik Bekker, Alexander Sushkov and Arne Wickenbrock
submission deadline 30 Jun 2026 | Viewed by 357 | Submission Open
Keywords: dark matter; exotic spin-dependent interactions; sensor networks; axion quark nuggets; Aharonov– Casher effect; nuclear spin hyperpolarization
Solar Activity During Cycle 25
edited by Hui Li and
submission deadline 30 Jun 2026 | Viewed by 264 | Submission Open
Keywords: solar magnetic field; solar flares; coronal mass ejections (CMEs); chromospheric and coronal heating; prominences/filaments and jets; solar activity and space weather; solar activity diagnosis with machine learning; solar instrumentation
(This special issue belongs to the Section Solar and Stellar Physics)
Hairy Black Holes: Insights and Advances
edited by and Jose Luis Blázquez-Salcedo
submission deadline 30 Jun 2026 | Viewed by 66 | Submission Open
Keywords: hairy black holes; general relativity; modified gravity; gravitational waves; black hole shadows; quantum gravity; no-hair theorem; numerical relativity; dark matter models; Event Horizon Telescope  
(This special issue belongs to the Section Compact Objects)
Asteroseismology: Probing Stellar Interiors Through Oscillation Modes
edited by , Kuldeep Verma and
submission deadline 30 Jun 2026 | Viewed by 35 | Submission Open
Keywords: asteroseismology; stellar oscillations; stellar interiors; stellar structure and evolution; element mixing; stellar rotation; angular momentum transfer; magnetic fields
(This special issue belongs to the Section Solar and Stellar Physics)
Ultralight Dark Matter: Theory and Observation
edited by Arnab Dasgupta
submission deadline 30 Jun 2026 | Viewed by 19 | Submission Open
Keywords: ultralight dark matter; bosonic fields; coherent field; axion; ALP; fuzzy dark matter
(This special issue belongs to the Section Cosmology)
HE/VHE Gamma-Ray in Extragalactic-Astrophysics: Observations, Models, and Cosmic Implications
edited by and
submission deadline 30 Jun 2026 | Viewed by 1 | Submission Open
Keywords: HE/VHE gamma-ray observations; active galactic nucleus; gamma-ray bursts; gamma-ray propagation; cosmic rays; EBL attenuation
(This special issue belongs to the Section High Energy Nuclear and Particle Physics)
Supernova Remnants in the Multi-Wavelength Era
edited by
submission deadline 1 Sep 2026 | Submission Open
Keywords: supernovae; supernova remnants; cosmic rays; explosion mechanisms; supernovae; dust; stellar evolution; ISM; CSM; pulsar wind nebulae; compact remnants
(This special issue belongs to the Section Galaxies and Clusters)
Exploring the Formation and Impact of Type Ia Supernovae
edited by Umberto Battino, Benjamin Rose and Robert Izzard
submission deadline 25 Sep 2026 | 1 articles | Viewed by 385 | Submission Open
Keywords: light curves; supernovae; nucleosynthesis; nuclear reactions; galactic chemical evolution; supernova remnants; cosmic expansion      
(This special issue belongs to the Section Solar and Stellar Physics)
Neutrino Oscillations and Interactions
edited by
submission deadline 30 Oct 2026 | Viewed by 86 | Submission Open
Keywords: neutrino oscillation parameters; PMNS matrix; neutrino interactions; neutrino mass hierarchy; charge-parity (CP) violation
(This special issue belongs to the Section High Energy Nuclear and Particle Physics)
Oscillations and Instabilities of Solar Filaments submission deadline 31 Dec 2026 | Viewed by 211 | Submission Open
Keywords: solar filaments; solar prominences; filament oscillations; MHD waves; coronal seismology; filament instabilities; solar eruptions; coronal mass ejections (CMEs)
(This special issue belongs to the Section Solar and Stellar Physics)
Thermal, Dynamic and Magnetic Properties of Solar Jets
edited by Ruisheng Zheng, Jiajia Liu and
submission deadline 31 Dec 2026 | Viewed by 88 | Submission Open
Keywords: solar jets; coronal mass ejections; solar flares; solar activities; magnetic fields; magnetic reconnection; particle acceleration
(This special issue belongs to the Section Solar and Stellar Physics)
Challenges in Evolutionary Mechanisms in Nearby Galaxies: Resolving Problems from Dwarfs to BCGs
edited by
submission deadline 31 Dec 2026 | Viewed by 62 | Submission Open
Keywords: spatially resolved analysis; star formation; feedback; baryon cycle; nuclear activity; galaxy environment
(This special issue belongs to the Section Galaxies and Clusters)
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