Universe

Planetary Radar Astronomy

edited by

and Yan Su

submission deadline 25 Apr 2025 | 3 articles | Viewed by 4075 | Submission Open

Keywords: radar astronomy; lunar and planetary science; lunar and planetary radar detection; lunar and deep space exploration; radar observations of planets within the solar system; radar observations of planets and stars outside the solar system; Chang’ e-3/-4/-5; Tianwen-1 mission and perseverance rover mission; fast radio bursts magnetar radio emission; radio astronomy; multi-messenger observations

(This special issue belongs to the Section Planetary Sciences)

New Discoveries in Astronomical Data

edited by Yanxia Zhang and

A-Li Luo

submission deadline 30 Apr 2025 | 5 articles | Viewed by 10106 | Submission Open

Keywords: machine learning in astronomy; discoveries: from radio to gamma-rays; deep learning; astrostatistics and astroinformatics; data analysis: methods; statistical: astronomical data bases

(This special issue belongs to the Section Astroinformatics and Astrostatistics)

Recent Advances in Gravitational Lensing and Galactic Dynamics

edited by

Francesco De Paolis

,

Alexander F. Zakharov

and

Luka Č. Popović

submission deadline 30 Apr 2025 | 3 articles | Viewed by 2814 | Submission Open

Keywords: gravitational lensing; weak lensing; astrophysics of black holes and neutron stars; gravitational waves; astrophysical tests of general relativity; relativistic astrophysics; galactic dynamics; JWST; EHT; and Euclid observations; exoplanets

(This special issue belongs to the Section Gravitation)

Dark Energy and Dark Matter

edited by Yan Gong

submission deadline 16 May 2025 | 9 articles | Viewed by 11672 | Submission Open

Keywords: dark energy; dark matter; modified gravity; theoretical model; cosmic acceleration; cosmic large-scale structure; gravitational lensing; galaxy clustering; intensity mapping; cosmological constraint

(This special issue belongs to the Section Cosmology)

Measurements, Observations and Theoretical Studies on the Solar Magnetic Field—Celebrating the 40th Anniversary of the Huairou Solar Observing Station

edited by

Shangbin Yang

, Mei Zhang, Junfeng Hou, Jiaben Lin and

Yu Liu

submission deadline 16 May 2025 | 7 articles | Viewed by 4676 | Submission Open

Keywords: solar magnetic field; solar polarimetry; multi-wavelength diagnostic; topology analysis; astroinformatics; MHD; solar dynamo; space weather forecasting; solar historical data; space projects

(This special issue belongs to the Section Solar and Stellar Physics)

Current Trends in Neutrino Oscillation Physics: A Phenomenological and Experimental Perspective

edited by

Monojit Ghosh

and Budimir Kliček

submission deadline 20 May 2025 | 1 articles | Viewed by 1248 | Submission Open

Keywords: neutrino oscillation; three flavour oscillation; beyond three flavour oscillation; models for neutrino mass and mixing; neutrino experiments; neutrino detectors; neutrino interactions

Probing the Early Universe

edited by

Øyvind Grøn

submission deadline 31 May 2025 | 3 articles | Viewed by 4922 | Submission Open

Keywords: the Planck era (t < 10-43 s); grand unification era (t < 10-36 s); the inflationary era (t < 10-33 s); electroweak epoch (10-33 s < t < 10-12 s); quark era (10-12 s < t < 10-5 s); hadron era (10-5 s < t < 1 s); lepton era with neutrino decoupling (1 s < t < 10 s); cosmic nucleosynthesis (10 s < t < 1000 s); radiation dominated and ‘ foggy’ era (1000 s < t < 380; 000 years); recombination (18; 000 years < t < 380; 000 years); the dark era (380; 000 years < t < 150 million years); first stars and galaxies (200 to 400 million years); cosmic reionization (200 million to 1 billion years)

(This special issue belongs to the Section Cosmology)

A Multiwavelength View of Supernovae

edited by

Vikram Dwarkadas

submission deadline 31 May 2025 | 1 articles | Viewed by 1294 | Submission Open

Keywords: supernovae; core collapse; type Ia; binaries; evolution; circumstellar interactions; emission processes; thermal and non-thermal emission

(This special issue belongs to the Section Solar and Stellar Physics)

Modified Gravity and Dark Energy Theories

edited by Changjun Gao

submission deadline 31 May 2025 | 2 articles | Viewed by 1043 | Submission Open

Keywords: dark energy; modified gravity theories; black hole solutions; exact solutions; black hole thermodynamics; nature of spacetime; black hole physics; gravitational waves in modified gravity theories

(This special issue belongs to the Section Gravitation)

Applications of Artificial Intelligence in Modern Astronomy

edited by Bo Qiu

submission deadline 31 May 2025 | Viewed by 385 | Submission Open

Keywords: artificial intelligence; machine learning; astronomy; deep learning; big data; telescope

(This special issue belongs to the Section Astroinformatics and Astrostatistics)

Compact Stars in the QCD Phase Diagram 2024

edited by

David Blaschke

, Toru Kojo, Hajime Sotani and Hajime Togashi

submission deadline 31 May 2025 | Viewed by 296 | Submission Open

Keywords: neutron stars; neutron star mergers; supernovae; warm; dense QCD; heavy-ion collisions

(This special issue belongs to the Section Compact Objects)

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

edited by

Ascension Del Olmo

and

Paola Marziani

submission deadline 1 Jun 2025 | 8 articles | Viewed by 14638 | Submission Open

Keywords: quasars; active galactic nuclei; supermassive black holes; quasar main sequence

(This special issue belongs to the Section Galaxies and Clusters)

Advances in Nuclear Astrophysics

edited by Ragandeep Singh Sidhu, Gavin Lotay and Jaspreet Singh Randhawa

submission deadline 15 Jun 2025 | Viewed by 449 | Submission Open

Keywords: nuclear astrophysics; observational astronomy; nuclear physics; stellar evolution; experimental techniques; fundamental properties

(This special issue belongs to the Section High Energy Nuclear and Particle Physics)

Loop Quantum Gravity and Non-Perturbative Approaches to Quantum Cosmology, Second Edition

edited by

Gerald B. Cleaver

submission deadline 20 Jun 2025 | 4 articles | Viewed by 4178 | Submission Open

Keywords: quantum gravity; non-perturbative approaches; planck scale; supergravity; non-commutative geometry; loop quantum gravity; loop quantum cosmology; string theory; emergent gravity; Horava-Lifshitz gravity

(This special issue belongs to the Section Cosmology)

Experimental and Observational Constraints on Wormhole Models

edited by João Luís de Figueiredo Rosa

submission deadline 20 Jun 2025 | 1 articles | Viewed by 971 | Submission Open

Keywords: wormholes; compact objects; experimental gravitational physics; model testing and constraining; exotic matter; modified theories of gravity; energy conditions

Origins and Natures of Inflation, Dark Matter and Dark Energy, 2nd Edition

edited by

Kazuharu Bamba

submission deadline 30 Jun 2025 | 9 articles | Viewed by 6419 | Submission Open

Keywords: inflation; dark matter; dark energy; alternative theory of gravity; cosmology; physics in the early universe; cosmological perturbation theory; cosmic microwave background radiation; gravitational waves; large-scale structure of the universe

(This special issue belongs to the Section Cosmology)

Studying Astrophysics with High-Energy Cosmic Particles

edited by Kinwah Wu and

Ellis R. Owen

submission deadline 30 Jun 2025 | 4 articles | Viewed by 4557 | Submission Open

(This special issue belongs to the Section Cosmology)

Variable Stars in the 21st Century: From Microvariability to Megavariability

edited by

Laszlo Szabados

and Tamas Szalai

submission deadline 30 Jun 2025 | 2 articles | Viewed by 1520 | Submission Open

Keywords: stellar variability; sky surveys; time-domain astrophysics; astrophysical transients; individual variable stars

(This special issue belongs to the Section Solar and Stellar Physics)

New Frontiers in Particle Physics with Quantum Sensing

edited by

Giuseppe Latino

submission deadline 30 Jun 2025 | Viewed by 315 | Submission Open

Keywords: particle physics; new physics; dark matter search; quantum sensing; new detection techniques

(This special issue belongs to the Section High Energy Nuclear and Particle Physics)

Tensions, Anomalies, and Challenges in the Standard Cosmological Model

edited by

John P. Ralston

and Pavan Kumar Aluri

submission deadline 30 Jun 2025 | Viewed by 204 | Submission Open

Keywords: standard cosmological model— anomalies; tensions; challenges; cosmological principle; Hubble tension; S8 tension; dark matter and dark energy; early- and late-time probes

(This special issue belongs to the Section Cosmology)

Astrophysics and Cosmology at High Z

edited by

Júlio César Fabris

and

Hermano Velten

submission deadline 30 Jun 2025 | Viewed by 80 | Submission Open

Keywords: astrophysics; cosmology; high-redshift surveys; structures in the universe; dark sector of the universe

(This special issue belongs to the Section Cosmology)

keV Warm Dark Matter (ΛWDM) in Agreement with Observations in Tribute to Héctor J. de Vega (2nd Edition)

edited by

Norma G. Sanchez

submission deadline 15 Jul 2025 | Viewed by 423 | Submission Open

Keywords: keV warm dark matter; keV warm dark matter theory; constraints; and observations; keV warm dark matter galaxies; keV warm dark matter supermassive black holes; keV warm dark matter particles; keV warm dark matter (direct and indirect) detection; neutrinos and sterile neutrinos; dark matter production models; direct and indirect searches

(This special issue belongs to the Section Gravitation)

The First Stars: Keys to Understanding Dark Matter

edited by

Øyvind Grøn

submission deadline 25 Jul 2025 | Viewed by 229 | Submission Open

Keywords: dark matter; first stars; early universe; WIMPs (weakly interacting massive particles); James Webb Space Telescope

(This special issue belongs to the Section Cosmology)

Universe: Feature Papers 2024—'Cosmology'

edited by

Jaime Haro Cases

and

Supriya Pan

submission deadline 31 Jul 2025 | 10 articles | Viewed by 10662 | Submission Open

Keywords: cosmological models; quantum cosmology; dark matter and dark energy; cosmic acceleration; cosmological constants; cosmological perturbation theory; cosmic microwave background (CMB); observational cosmology

(This special issue belongs to the Section Cosmology)

Advances in Studies of Galaxies at High Redshift

edited by Krisztina Éva Gabányi

submission deadline 31 Jul 2025 | 2 articles | Viewed by 1311 | Submission Open

Keywords: high-redshift galaxies; active galaxies; quasars; supermassive black holes; star formation; galaxy evolution; early universe; cosmology; observational astronomy; simulations

(This special issue belongs to the Section Galaxies and Clusters)

Multi-wavelength Properties of Active Galactic Nuclei

edited by

Stefano Vercellone

submission deadline 31 Jul 2025 | 1 articles | Viewed by 1275 | Submission Open

Keywords: active galactic nuclei; black-hole physics; accretion; winds; jets; emission mechanism; theoretical modelling; observing facilities; software and databases

(This special issue belongs to the Section Galaxies and Clusters)

Neutrino Insights: Peering into the Subatomic Universe

edited by Guillermo D. Megias

submission deadline 31 Aug 2025 | 3 articles | Viewed by 1865 | Submission Open

Keywords: neutrino physics; neutrino oscillations; electroweak interactions; CP violation; solar and atmospheric neutrinos; long-baseline accelerators; neutrino-nucleus reactions; low and high energy neutrinos

(This special issue belongs to the Section High Energy Nuclear and Particle Physics)

Cosmological Perturbations: From the Early Universe to Late-Time Evolution

edited by Giovanni Otálora

submission deadline 31 Aug 2025 | Viewed by 73 | Submission Open

Keywords: cosmological perturbations; quantum fluctuations; primordial gravitational waves; primordial black holes; inflationary models; modified gravity; large-scale structure; stochastic gravitational wave background; non-Gaussianity; dark energy perturbations

(This special issue belongs to the Section Cosmology)

Supermassive Black Hole Mass Measurements

edited by Benjamin Boizelle

submission deadline 21 Sep 2025 | Viewed by 75 | Submission Open

Keywords: supermassive black holes; active galactic nuclei; stellar or gaseous kinematics; dynamical modeling

(This special issue belongs to the Section Compact Objects)

Bouncing Cosmology and the Early Universe: From Theory to Observations

edited by Arnab Dasgupta

submission deadline 30 Sep 2025 | Viewed by 138 | Submission Open

Keywords: bouncing cosmology; cyclic universe; cosmic microwave background (CMB); matter– antimatter asymmetry; dark energy and dark matter

(This special issue belongs to the Section Cosmology)

Multi-Messenger Astrophysics: Synergies Between Cosmic Rays, Gravitational Waves, Neutrinos, and Electromagnetic Signals

edited by

Gina Isar

and Günter Sigl

submission deadline 30 Sep 2025 | Viewed by 107 | Submission Open

Keywords: cosmic rays and air showers; high-energy gamma-rays and neutrinos gravitational waves; acceleration mechanisms and propagation; cosmic magnetic fields; cosmic ray anisotropies; multi-messenger and multi-wavelength signals; detection methods; hadronic interaction models; machine learning and high performance computing

(This special issue belongs to the Section High Energy Nuclear and Particle Physics)

Extensions of General Relativity and Applications to Cosmology and Gravitation

edited by Mauricio Bellini, Mariano Anabitarte and

Herbert W. Hamber

submission deadline 30 Sep 2025 | Viewed by 93 | Submission Open

Keywords: extended general relativity; gravitation; cosmology; early universe; topological defects; black holes; Hawking radiation; cosmic strings; quantum gravity; extended manifolds; Weyl manifolds; dark energy; dark matter

(This special issue belongs to the Section Gravitation)

Geometric Theories of Gravity

edited by

László Árpád Gergely

submission deadline 30 Sep 2025 | Viewed by 84 | Submission Open

Keywords: spacetime; general relativity and its geometric reformulations; modified gravity: formal aspects and applications; perturbations and gravitational waves; cosmology; dark matter; and dark energy models

(This special issue belongs to the Section Gravitation)

The Lifecycle of Massive Stars

edited by

Jacco Th. van Loon

submission deadline 15 Oct 2025 | Viewed by 120 | Submission Open

Keywords: massive stars; star formation; stellar evolution; stellar mass loss; stellar winds; supernova progenitors; binary stars; stellar magnetism; stellar rotation; population III

(This special issue belongs to the Section Solar and Stellar Physics)

The 10th Anniversary of Universe: Standard Cosmological Models, and Modified Gravity and Cosmological Tensions

edited by

Panayiotis Stavrinos

,

Antonino Del Popolo

,

Hermano Velten

, Tina Kahniashvili,

Jean-Michel Alimi

and

Yi-Fu Cai

submission deadline 31 Oct 2025 | 3 articles | Viewed by 1604 | Submission Open

Keywords: general relativity and its extensions; modified gravity; Λ CDM cosmological model; dark matter; dark energy; hubble tension; gravitational waves; scalar-tensor theories; cosmological anisotropies

(This special issue belongs to the Section Cosmology)

Search for New Physics Through Combined Approaches

edited by Yang Zhang and

Fei Wang

submission deadline 31 Oct 2025 | 2 articles | Viewed by 817 | 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)

10th Anniversary of Universe: Studying the Strongly Interacting Matter in Nuclear Reactions from Intermediate to Ultra-Relativistic Energies

edited by

Máté Csanád

, Panos Christakoglou,

Giuseppe Verde

and You Zhou

submission deadline 31 Oct 2025 | Viewed by 141 | Submission Open

Keywords: quark-gluon plasma; nuclear interactions; heavy-ion physics; strong interaction; phase diagram

(This special issue belongs to the Section High Energy Nuclear and Particle Physics)

10th Anniversary of Universe: Galaxies and Their Black Holes

edited by

Paola Marziani

and

Mauro D’Onofrio

submission deadline 31 Oct 2025 | Viewed by 137 | Submission Open

Keywords: supermassive black holes; accretion; galactic evolution; feedback; multimessenger astronomy; high-redshift universe; stellar- and intermediate-mass black holes

New Progress of Black Hole Accretion Disk

edited by Arghajit Jana

submission deadline 31 Oct 2025 | Viewed by 78 | Submission Open

Keywords: active galactic nuclei; black holes; X-ray binaries; X-ray polarization; reverberation technique; accretion; accretion disk; jet; disk– jet couplings; quasars; Seyfert; blazars

(This special issue belongs to the Section Gravitation)

Ultra-High Energy Cosmic Rays: Past, Present and Future

edited by

Dmitriy Kostunin

and Vladimir Lenok

submission deadline 31 Oct 2025 | Viewed by 56 | Submission Open

Keywords: ultra-high energy cosmic rays; astrophysical neutrino; high-energy gamma rays; multimessenger astronomy; cosmic accelerators

(This special issue belongs to the Section Space Science)

Quantum Field Theory in Curved Spacetime and Its Implications for Cosmology, Blackholes and Quantum Gravity, 2nd Edition

edited by Korumilli Sravan Kumar and

Joao Marto

submission deadline 14 Nov 2025 | Viewed by 18 | Submission Open

Keywords: quantum field theory in curved spacetime; quantum gravity; black holes; cosmology

(This special issue belongs to the Section Foundations of Quantum Mechanics and Quantum Gravity)

Magnetic Fields and Activity in Stars: Origins and Evolution

edited by

Renada Konstantinova-Antova

submission deadline 21 Nov 2025 | Viewed by 75 | Submission Open

Keywords: magnetic fields; magnetic activity; stellar evolution; dynamos in stars; star– planet interaction; spectropolarimetry; asteroseismology; stellar atmospheres

(This special issue belongs to the Section Solar and Stellar Physics)

Exploring Double Beta Decay: Probing Fundamental Properties of Neutrinos and Beyond

edited by

Rita Bernabei

submission deadline 30 Nov 2025 | 2 articles | Viewed by 1191 | Submission Open

Keywords: experimental and theoretical topics on double beta decay modes; low-background detectors and methodologies; nuclear matrix

(This special issue belongs to the Section High Energy Nuclear and Particle Physics)

Studies of Hadron Spectroscopy at the Future Electron-Hadron and Electron-Ion Colliders

edited by Vladimir Khachatryan and Wenliang Li

submission deadline 30 Nov 2025 | Viewed by 335 | Submission Open

Keywords: quantum chromodynamics; electron scattering; electron-hadron colliders; hadron spectroscopy; conventional & non-conventional hadronic states; photo & electroproduction processes; exclusive & inclusive processes; fragmentation & hadronization

(This special issue belongs to the Section High Energy Nuclear and Particle Physics)

Exploring the Formation and Impact of Type Ia Supernovae

edited by Umberto Battino, Benjamin Rose and Robert Izzard

submission deadline 5 Dec 2025 | Viewed by 121 | 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)

Mechanisms Behind Black Holes and Relativistic Jets

edited by

Ioana Dutan

submission deadline 15 Dec 2025 | Viewed by 22 | Submission Open

Keywords: black holes; relativistic jets; active galactic nuclei; gamma-ray bursts; numerical simulations

(This special issue belongs to the Section Compact Objects)

BGL2025: The 13th Bolyai–Gauss–Lobachevsky Conference on Non-Euclidean Geometry and Its Applications

edited by Taoufik Ouali,

Tiberiu Harko

, László Jenkovszky, Ahmed Errahmani and

Amine Bouali

submission deadline 30 Dec 2025 | Viewed by 128 | Submission Open

Keywords: advances in mathematics; recent developments in physics; mathematics– physics dialogue; modified gravity theories; the Hubble tension; quantum gravity; cosmology; gravitational waves; complex systems; chaos and instability

Current Status of the Hubble Tension

edited by

Giovanni Montani

,

Eleonora Di Valentino

and Nakia Carlevaro

submission deadline 31 Dec 2025 | 4 articles | Viewed by 4259 | Submission Open

Keywords: Hubble tension; dark matter; dark energy; dark matter/dark energy interaction; quintessence; late universe physics; cosmology from modified gravity; early universe dark energy; model testing; data analysis

(This special issue belongs to the Section Cosmology)

Exploring Low-Frequency Gravitational Wave Sources: Waveforms, Detection and Sciences

edited by Wenbiao Han, Ziren Luo and Shucheng Yang

submission deadline 31 Dec 2025 | 4 articles | Viewed by 2504 | Submission Open

Keywords: gravitational waves; black holes; tests of theories of gravity; machine learning; data analysis

(This special issue belongs to the Section Gravitation)

Universe: Feature Papers 2025—Space Science

edited by

Ezio Caroli

submission deadline 31 Dec 2025 | 5 articles | Viewed by 2345 | Submission Open

Keywords: space mission/instrument/telescope concepts; inflight/in preparation space instrument; instrument performance evaluation; detectors technologies and perspectives; imaging and timing techniques and methods; spectroscopy and polarimetry techniques and methods; observational and analysis techniques and methods; cosmic ray sources emission models; methods for observing gravitational waves and counterparts at other frequencies (from radio to gamma); methods and techniques for planetary (solar and extrasolar) science and exploration; space technology and biomedicine; environmental science; telecommunications; materials science

(This special issue belongs to the Section Space Science)

Journal Menu

Journal Browser

Special Issues

Further Information

Guidelines

MDPI Initiatives

Follow MDPI