Journal profile · Physics and Astronomy-Physics and Astronomy (miscellaneous)
NPJ Microgravity
ISSN 2373-8065 · Springer Nature · United Kingdom · Founded 2015
NPJ Microgravity: CAS Zone 2 · Engineering (2025 upgraded edition); impact factor 4.94; fully open access; APC about USD 3,790; median 193 days to acceptance (99 articles, last 24 months); 98 articles in 2025; indexed in SCIE and Scopus.
Scope
Aims, scope and focus
NPJ Microgravity is published by Springer Nature and is in Zone 2 of Engineering in the CAS Journal Ranking (2025 upgraded edition). By OpenAlex counts of its recent articles, its largest topics are Spaceflight effects on biology, Space Exploration and Technology and High Altitude and Hypoxia, together about 54.9% of its articles. (generated from OpenAlex topic counts and CAS ranking data)
An open access, online-only, multi- and trans-disciplinary research journal, npj Microgravity is dedicated to publishing the most important scientific advances in the life sciences, physical sciences and engineering fields that are facilitated by spaceflight and ground-based analogue platforms.
From the journal's Aims & Scope
Research area (LetPub): Physics and Astronomy-Physics and Astronomy (miscellaneous)
Main research topics OpenAlex counts of recent articles; shares are approximate
- Spaceflight effects on biologyMedicine40.8%
- Space Exploration and TechnologyEngineering7.4%
- High Altitude and HypoxiaBiochemistry, Genetics and Molecular Biology6.7%
- Planetary Science and ExplorationPhysics and Astronomy6.2%
- Genetics, Aging, and Longevity in Model OrganismsBiochemistry, Genetics and Molecular Biology3.8%
- Muscle Physiology and DisordersBiochemistry, Genetics and Molecular Biology3.5%
- Space Science and Extraterrestrial LifePhysics and Astronomy3%
- Solidification and crystal growth phenomenaMaterials Science2.7%
Rankings & indexing
CAS ranking and database indexing
CAS Journal Ranking
CAS Journal Ranking, upgraded edition (March 2025)Engineering Zone 2
| Level | Category | Zone |
|---|---|---|
| Major | Engineering | Zone 2 |
| Minor | Engineering, Aerospace | Zone 2 |
Top journal: noReview journal: no
CAS Xinrui Journal Ranking (March 2026)Engineering Zone 2
| Level | Category | Zone |
|---|---|---|
| Major | Engineering | Zone 2 |
| Minor | Engineering, Aerospace | Zone 2 |
Top journal: noReview journal: not marked
CAS Journal Ranking, previous upgraded edition (December 2023)Physics & Astronomy Zone 1
| Level | Category | Zone |
|---|---|---|
| Major | Physics & Astronomy | Zone 1 |
| Minor | Multidisciplinary Sciences | Zone 2 |
Top journal: noReview journal: no
Database indexing
SCIEScopusDOAJLetPub
International journal early-warning lists: not listed in any editionLetPub
Indexing the journal's website claims
EI CompendexPubMedINSPECCASPublisher website
Other: Google Scholar, ProQuest, Dimensions, CNKI, Baidu, Astrophysics Data System, Naver, OCLC, Portico, CLOCKSS, Astrophysics Data System (ADS), CNPIEC, Chinese Academy of Medical Science (CAMS), Japanese Science and Technology Agency (JST), Meta, OCLC WorldCat Discovery Service, Ovid Discovery, SCImago, TD Net Discovery Service, Wanfang, eLibrary.ru
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
- 4.94LetPub ·
- CiteScore 2026-06
- 7.5LetPub ·
- SJR 2026-06
- 1.12LetPub ·
- SNIP 2026-06
- 1.67LetPub ·
- h-index
- 59OpenAlex ·
- i10-index
- 342OpenAlex ·
- 2-year mean citedness
- 4.73OpenAlex ·
- Self-citation rate
- 8.2%LetPub ·
- Share of gold OA articles
- 100%LetPub ·
Volume
- Articles per year
- 91LetPub ·
Articles by year OpenAlex count · 696 in total · the current year is incomplete
| Year | Articles | Open access | Citations |
|---|---|---|---|
| 2026 | 107 | 107 | 48 |
| 2025 | 98 | 98 | 368 |
| 2024 | 115 | 115 | 1,097 |
| 2023 | 95 | 95 | 1,948 |
| 2022 | 58 | 58 | 1,198 |
| 2021 | 56 | 56 | 1,778 |
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
Review time from article dates manuscript dates registered with Crossref · to
193 daysMedian, submission to acceptance · P25–P75 144 days – 282 days
- Acceptance to online
- median 17 days (99 articles)
- Submission to online
- median 233 days
- Sample
- 99 articles with submission and acceptance dates (230 in the window); the latest was accepted on
Only articles that were accepted and published are counted, not the time spent on rejected manuscripts, so this usually runs longer than a publisher's "time to first decision".
Other sources
- Average review time (community reports)
- about 9 weeksLetPub ·
- Submission to publication (journal-reported)
- about 9 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 | EUR 3,090 / USD 3,790 / GBP 2,690 | Yes | CC BY, CC BY-NC-ND | |
| OpenAlex | USD 3,690 / EUR 2,990 / GBP 2,590 | — | — | |
| LetPub | GBP 2,390 / USD 3,390 / EUR 2,790 | Yes | — |
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)
Policy excerpts from the journal's websiteOpen access
- Open access Open Access
npj Microgravity is a fully open access journal. More on Creative Commons Attribution licenses and the benefits of publishing open access can be found in this section.
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
- Springer Nature
- Country or region
- United Kingdom
- Language
- English
- Founded
- 2015
- ISSN
- 2373-8065
- Society / sponsor
- With the support of
- 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 NPJ Microgravity
What CAS zone is NPJ Microgravity in?
In the 2025 upgraded edition of the CAS Journal Ranking, NPJ Microgravity is in Zone 2 of Engineering, and in Zone 2 of the minor category Engineering, Aerospace. In the 2026 Xinrui edition it is in Zone 2 of Engineering. Zones from different editions, and from major and minor categories, are not interchangeable.
What is the impact factor of NPJ Microgravity?
The latest impact factor listed by LetPub is 4.94; CiteScore 7.5, h-index 59.
How long does peer review take at NPJ Microgravity?
Based on the dates recorded on 99 articles published between October 2024 and October 2026 (the last 24 months), the median time from submission to acceptance is 193 days (interquartile range 144–282 days); authors report an average review time of about 9 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.
Which databases index NPJ Microgravity?
According to LetPub and DOAJ records, NPJ Microgravity is indexed in SCIE, Scopus and DOAJ. The journal's website also lists EI Compendex, PubMed, INSPEC and CAS; that list has not been checked against each database.
Is NPJ Microgravity open access, and what is the APC?
NPJ Microgravity is a fully open-access journal. APC about USD 3,790.
Sources and updates
The facts on this page come from LetPub, OpenAlex, DOAJ, Publisher website; 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 2026-08-26). Last updated: .