Journal profile · Physics and Astronomy-Astronomy and Astrophysics
Galaxies
ISSN 2075-4434 · Multidisciplinary Digital Publishing Institute (MDPI) · Switzerland
Galaxies: CAS Zone 3 · Physics & Astronomy (2025 upgraded edition); impact factor 4 (journal website); JCR Q2 (journal website); fully open access; APC charged, amount not published; review about 11 weeks (community reports); 135 articles in 2025; indexed in ESCI and Scopus.
Scope
Aims, scope and focus
Galaxies is published by Multidisciplinary Digital Publishing Institute (MDPI) and is in Zone 3 of Physics & Astronomy in the CAS Journal Ranking (2025 upgraded edition). By OpenAlex counts of its recent articles, its largest topics are Astrophysics and Cosmic Phenomena, Stellar, planetary, and galactic studies and Galaxies: Formation, Evolution, Phenomena, together about 32.9% of its articles. Its main subfields are Astronomy and Astrophysics. (generated from OpenAlex topic counts and CAS ranking data)
Galaxies (ISSN 2075-4434) is an international, peer-reviewed open access journal that provides an advanced forum for studies related to astronomy, astrophysics, and cosmology. It publishes reviews, research articles, communications and technical notes. Our aim is to offer to interested authors the advantages of a fast and very professional publication of their results, in particular those containing original and creative research proposals and ideas. We encourage scientists to describe their astronomical observations and theoretical results in detail. There is no restriction on the maximum length of papers. In addition, the following are especially welcomed: Manuscripts containing original research proposals and research ideas. Electronic files or software containing full details of the calculations; if unable to be published in a normal way they, can be deposited as supplementary material. Manuscripts containing summaries and surveys on research cooperation (for example, white papers for detecting projects/missions) and in-progress and future projects such as those funded by national governments can be submitted as they provide interesting information for a broad field of users.
From the journal's Aims & Scope
Research area (LetPub): Physics and Astronomy-Astronomy and Astrophysics
Editorial board by country: none in mainland China; most named Italy 11, Spain 4, United States 3, United Kingdom 2, Canada 2 (31 members with a country) Editorial board ↗Publisher website ·
Main research topics OpenAlex counts of recent articles; shares are approximate
- Astrophysics and Cosmic PhenomenaPhysics and Astronomy13.3%
- Stellar, planetary, and galactic studiesPhysics and Astronomy10.1%
- Galaxies: Formation, Evolution, PhenomenaPhysics and Astronomy9.6%
- Gamma-ray bursts and supernovaePhysics and Astronomy7.6%
- Astronomy and Astrophysical ResearchPhysics and Astronomy7.2%
- Astrophysical Phenomena and ObservationsPhysics and Astronomy7%
- Astrophysics and Star Formation StudiesPhysics and Astronomy6.9%
- Radio Astronomy Observations and TechnologyPhysics and Astronomy6.1%
Rankings & indexing
CAS ranking and database indexing
CAS Journal Ranking
CAS Journal Ranking, upgraded edition (March 2025)Physics & Astronomy Zone 3
| Level | Category | Zone |
|---|---|---|
| Major | Physics & Astronomy | Zone 3 |
| Minor | Astronomy & Astrophysics | Zone 3 |
Top journal: noReview journal: no
CAS Xinrui Journal Ranking (March 2026)Physics & Astronomy Zone 2
| Level | Category | Zone |
|---|---|---|
| Major | Physics & Astronomy | Zone 2 |
| Minor | Astronomy & Astrophysics | Zone 2 |
Top journal: noReview journal: not marked
CAS Journal Ranking, previous upgraded edition (December 2023)Not covered
Not covered by this edition.
JCR / CiteScore quartiles on the journal's website
- JCR Q2 · Astronomy and Astrophysics
- CiteScore Q1 · Astronomy and Astrophysics
Publisher-reported: JCR figures are Clarivate's and CiteScore figures Scopus's to confirm; both are a different system from the CAS zones.Publisher website
Database indexing
ESCIScopusDOAJLetPub
International journal early-warning lists: not listed in any editionLetPub
Indexing the journal's website claims
Web of ScienceINSPECPublisher website
Other: Astrophysics Data System
As the journal's website lists them, not checked against each database; for Web of Science editions the records above apply.
Editions, and major and minor categories, are shown separately and never merged into one zone; check which edition your institution uses before you submit or report.
Metrics
Impact metrics and publication volume
Impact
- Impact factor (publisher) 2025
- 4Publisher website ·
- 5-year impact factor (publisher) 2025
- 3.7Publisher website ·
- CiteScore 2026-06
- 7LetPub ·
- CiteScore (publisher)
- 7Publisher website ·
- SJR 2026-06
- 1.31LetPub ·
- SNIP 2026-06
- 1.15LetPub ·
- h-index
- 49OpenAlex ·
- i10-index
- 385OpenAlex ·
- 2-year mean citedness
- 2.74OpenAlex ·
- Self-citation rate
- 5%LetPub ·
- Share of gold OA articles
- 100%LetPub ·
Volume
- Articles per year
- 138LetPub ·
Articles by year OpenAlex count · 1,315 in total · the current year is incomplete
| Year | Articles | Open access | Citations |
|---|---|---|---|
| 2026 | 88 | 88 | 22 |
| 2025 | 135 | 135 | 289 |
| 2024 | 104 | 104 | 584 |
| 2023 | 114 | 114 | 1,448 |
| 2022 | 122 | 122 | 1,959 |
| 2021 | 142 | 142 | 1,569 |
Sources count differently and were observed at different times, so each source's own value is kept; "publisher" marks figures from the journal's website.
Review & acceptance
Review time and acceptance
- Average review time (community reports)
- about 11 weeksLetPub ·
- Submission to first decision
- 23.8 daysPublisher website ·
- Acceptance to publication
- 4.9 daysPublisher website ·
- Submission to publication (journal-reported)
- about 6 weeksDOAJ ·
- Peer review
- Single anonymous peer reviewDOAJ
Community reports come from authors' own submissions (confidence 0.5) and are not a promise from the journal; for publisher figures, the journal's own definitions apply.
Fees & open access
APC and open-access policy
Fully open accessDOAJ
Every article is open access; authors usually pay an article processing charge (APC).
| Source | APC | Fee waiver | License | Observed |
|---|---|---|---|---|
| DOAJ | CHF 1,400 | Yes | CC BY | |
| OpenAlex | CHF 1,400 | — | — | |
| LetPub | CHF 1,400 | Yes | — | |
| Publisher website | Yes, amount not published | — | — |
The journal's website is authoritative for fees; sources were observed at different times and each keeps its own value, without averaging.
Submission
Article types and submission policies (journal website)
What to prepare6 items from the author guidelines
- Reference style
- Author–date
- Templates
- LaTeX and Word
- First submission
- Free format: the journal's layout is not required
- Suggested reviewers
- Required, 3
- Graphical abstract
- Optional
- Cover letter
- Required
Article types accepted19
- articleArticle: These are original research manuscripts. The work should report scientifically sound experiments and provide a substantial amount of new information.Length not stated
- book reviewAll Article Types Article Review Communication Editorial Abstract Book Review Brief Communication Brief Report Case Report Clinicopathological Challenge Comment…Length not stated
- brief communicationAll Article Types Article Review Communication Editorial Abstract Book Review Brief Communication Brief Report Case Report Clinicopathological Challenge Comment…Length not stated
- brief reportAll Article Types Article Review Communication Editorial Abstract Book Review Brief Communication Brief Report Case Report Clinicopathological Challenge Comment…Length not stated
- case reportAll Article Types Article Review Communication Editorial Abstract Book Review Brief Communication Brief Report Case Report Clinicopathological Challenge Comment…Length not stated
- commentaryAll Article Types Article Review Communication Editorial Abstract Book Review Brief Communication Brief Report Case Report Clinicopathological Challenge Comment…Length not stated
- conference reportAll Article Types Article Review Communication Editorial Abstract Book Review Brief Communication Brief Report Case Report Clinicopathological Challenge Comment…Length not stated
- editorialAll Article Types Article Review Communication Editorial Abstract Book Review Brief Communication Brief Report Case Report Clinicopathological Challenge Comment…Length not stated
- hypothesisAll Article Types Article Review Communication Editorial Abstract Book Review Brief Communication Brief Report Case Report Clinicopathological Challenge Comment…Length not stated
- letterAll Article Types Article Review Communication Editorial Abstract Book Review Brief Communication Brief Report Case Report Clinicopathological Challenge Comment…Length not stated
- opinionAll Article Types Article Review Communication Editorial Abstract Book Review Brief Communication Brief Report Case Report Clinicopathological Challenge Comment…Length not stated
- perspectiveAll Article Types Article Review Communication Editorial Abstract Book Review Brief Communication Brief Report Case Report Clinicopathological Challenge Comment…Length not stated
- protocolAll Article Types Article Review Communication Editorial Abstract Book Review Brief Communication Brief Report Case Report Clinicopathological Challenge Comment…Length not stated
- registered reportAll Article Types Article Review Communication Editorial Abstract Book Review Brief Communication Brief Report Case Report Clinicopathological Challenge Comment…Length not stated
- reviewAll Article Types Article Review Communication Editorial Abstract Book Review Brief Communication Brief Report Case Report Clinicopathological Challenge Comment…Length not stated
- systematic reviewAll Article Types Article Review Communication Editorial Abstract Book Review Brief Communication Brief Report Case Report Clinicopathological Challenge Comment…Length not stated
- technical noteAll Article Types Article Review Communication Editorial Abstract Book Review Brief Communication Brief Report Case Report Clinicopathological Challenge Comment…Length not stated
- tutorialAll Article Types Article Review Communication Editorial Abstract Book Review Brief Communication Brief Report Case Report Clinicopathological Challenge Comment…Length not stated
- viewpointAll Article Types Article Review Communication Editorial Abstract Book Review Brief Communication Brief Report Case Report Clinicopathological Challenge Comment…Length not stated
Policy excerpts from the journal's websiteAuthorship, Conflicts of interest, Data availability, Publication ethics, License & copyright, Open access, Peer review, Preprints
- Authorship Authorship
MDPI follows the International Committee of Medical Journal Editors (ICMJE) guidelines which state that, in order to qualify for authorship of a manuscript, the following criteria should be observed: Make substantial contributions to the conception or design of the work, or the acquisition, analysis, or interpretation of data for the work; Draft the work or review it critically for important intel…
Source ↗Publisher website ·- Conflicts of interest Conflicts of Interest
According to The International Committee of Medical Journal Editors, “Authors should avoid entering into agreements with study sponsors, both for-profit and non-profit, that interfere with authors’ access to all of the study’s data or that interfere with their ability to analyze and interpret the data and to prepare and publish manuscripts independently when and where they choose.” All authors mus…
Source ↗Publisher website ·- Data availability Data availability statements
Data availability statements are required for all articles published with MDPI. During the peer review and editorial decision process, authors can be asked to share existing datasets or raw data that have been analyzed in the manuscript, and whether they will be made available to other researchers following publication. Authors will also be asked for the details of any existing datasets that have …
Source ↗Publisher website ·- Publication ethics Publication Ethics Statement
Galaxies is a member of the Committee on Publication Ethics (COPE). We fully adhere to its Code of Conduct and to its Best Practice Guidelines. The editors of this journal enforce a rigorous peer review process together with strict ethical policies and standards to ensure to add high quality scientific works to the field of scholarly publication. Unfortunately, cases of plagiarism, data falsificat…
Source ↗Publisher website ·- License & copyright Copyright / Open Access
Articles published in Galaxies will be Open-Access articles distributed under the terms and conditions of the Creative Commons Attribution License (CC BY). The copyright is retained by the author(s). MDPI will insert the following note at the end of the published text: © 2026 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and c…
Source ↗Publisher website ·- Open access Open access publication fees
Open access Model summary
If you transfer your manuscript to another open access (OA) journal, you will be charged an Article Processing Charge (APC) if your article is accepted for publication. The APC for each journal can be found on the individual journal’s website. For more information about APCs, please see here.
Source ↗Publisher website ·- Peer review Editorial Process and Peer Review
All submissions are thoroughly peer-reviewed by experts within the field and undergo a structured editorial workflow designed to ensure quality, transparency, and scientific integrity. The full editorial procedure is available on the Editorial Process page and is also provided below. Pre-check Pre-check consists of a technical pre-check performed by the Editorial Office and an editorial pre-check …
Source ↗Publisher website ·- Preprints Preprints and Conference Papers
Galaxies accepts submissions that have previously been made available as preprints provided that they have not undergone peer review. A preprint is a draft version of a paper made available online before submission to a journal. MDPI operates Preprints, a preprint server to which submitted papers can be uploaded directly after completing journal submission. Note that Preprints operates independent…
Source ↗Publisher website ·
Excerpts are quoted from the journal's website; "model summary" lines are written by Workers AI and checked against the text. The journal's website is authoritative.
Profile
Publication details and official links
- Publisher
- Multidisciplinary Digital Publishing Institute (MDPI)
- Country or region
- Switzerland
- Language
- English
- ISSN
- 2075-4434
- Latest issue on the website
- Volume 14 (2026)
- Official links
- Journal homepage ↗DOAJ
- Submission system ↗Publisher website
- Author guidelines ↗LetPub
- Aims & Scope ↗LetPub
- Special issues ↗Publisher website
- APC information ↗DOAJ
- Fee waivers ↗DOAJ
- Open access statement ↗DOAJ
- License & copyright ↗DOAJ
- Peer review process ↗LetPub
- Editorial board ↗LetPub
- Plagiarism policy ↗DOAJ
FAQ
Frequently asked questions about Galaxies
What CAS zone is Galaxies in?
In the 2025 upgraded edition of the CAS Journal Ranking, Galaxies is in Zone 3 of Physics & Astronomy, and in Zone 3 of the minor category Astronomy & Astrophysics. In the 2026 Xinrui edition it is in Zone 2 of Physics & Astronomy. Zones from different editions, and from major and minor categories, are not interchangeable.
What is the impact factor of Galaxies?
The journal's website gives an impact factor of 4 (2025); this is the journal's own figure, as LetPub lists none for it; CiteScore 7, h-index 49.
How long does peer review take at Galaxies?
Authors report an average review time of about 11 weeks. Article statistics cover accepted papers only, publisher figures follow the journal's own definitions, and community reports come from authors' own submissions; none is a promise from the journal.
What JCR quartile is Galaxies in?
The journal's website gives JCR Q2; by category, Astronomy and Astrophysics Q2. JCR quartiles are Clarivate's to confirm and a different system from the CAS zones; in the CAS ranking the journal is in Zone 3 of Physics & Astronomy.
What are the manuscript requirements of Galaxies?
According to the journal's author guidelines: Reference style: Author–date; Templates: LaTeX and Word; First submission: Free format: the journal's layout is not required; Suggested reviewers: Required, 3; Graphical abstract: Optional; Cover letter: Required. A model extracted these from the author guidelines and each was checked against the text; check the latest version on the journal's website before submitting.
Where are the editorial board members of Galaxies based?
Of the 31 board members whose country the journal's board page names, none are in mainland China; the countries named most often are Italy (11), Spain (4) and United States (3). Counted from the institutions listed on the board page; for reference only.
Which databases index Galaxies?
According to LetPub and DOAJ records, Galaxies is indexed in ESCI, Scopus and DOAJ. The journal's website also lists Web of Science and INSPEC; that list has not been checked against each database.
Is Galaxies open access, and what is the APC?
Galaxies is a fully open-access journal. APC charged, amount not published.
Sources and updates
The facts on this page come from LetPub, Publisher website, OpenAlex, DOAJ; every figure is tagged with its source and the date it was observed, and conflicting values are kept per source. LetPub source page: view ↗ (archived 2026-08-25). Last updated: .