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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Primordial Black Holes: Observational Strategies
edited by
submission deadline 3 May 2026 | Viewed by 148 | Submission Open
Keywords: dark matter; gravitational radiation; high-energy astrophysics; microlensing
(This special issue belongs to the Section Compact Objects)
Strong Gravitational Lensing in Observational Astrophysics and Cosmology
edited by
submission deadline 31 May 2026 | Viewed by 59 | Submission Open
Keywords: time-delay cosmography; Hubble constant; lens modeling; cosmological probes; lensed transients; machine learning; high-redshift galaxies
(This special issue belongs to the Section Cosmology)
Celebrating the 110th Anniversary of General Relativity: Advances, Challenges and Perspectives submission deadline 30 Jun 2026 | 7 articles | Viewed by 2186 | Submission Open
Keywords: general relativity; 110th anniversary; gravitation; cosmology; challenges in gravitational physics
(This special issue belongs to the Section Gravitation)
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 116 | Submission Open
Keywords: dark matter; exotic spin-dependent interactions; sensor networks; axion quark nuggets; Aharonov– Casher effect; nuclear spin hyperpolarization
Exploring the Formation and Impact of Type Ia Supernovae
edited by Umberto Battino, Benjamin Rose and Robert Izzard
submission deadline 25 Sep 2026 | Viewed by 285 | 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)
Oscillations and Instabilities of Solar Filaments submission deadline 31 Dec 2026 | Viewed by 60 | 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)
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