OOIR: Observatory of International Research

Papers

(The TQCC of npj Microgravity is 8. The table below lists those papers that are above that threshold based on CrossRef citation counts [max. 250 papers]. The publications cover those that have been published in the past four years, i.e., from 2021-04-01 to 2025-04-01.)

Article	Citations
Overview of lunar dust toxicity risk	97
Optic nerve sheath diameter and spaceflight: defining shortcomings and future directions	68
Impact of convection on the damping of an oscillating droplet during viscosity measurement using the ISS-EML facility	57
The effects of long-term exposure to microgravity and body orientation relative to gravity on perceived traveled distance	53
The glymphatic pathway in the optic nerve: did astronauts already reveal signs of its existence?	52
Critical heat flux enhancement in microgravity conditions coupling microstructured surfaces and electrostatic field	45
How advances in low-g plumbing enable space exploration	44
Towards an extension of equivalent system mass for human exploration missions on Mars	34
Microfluidics-integrated spaceflight hardware for measuring muscle strength of Caenorhabditis elegans on the International Space Station	34
Sessile drops in weightlessness: an ideal playground for challenging Young’s equation	32
Pre-flight body weight effects on urinary calcium excretion in space	31
Cooling of a granular gas mixture in microgravity	29
Unlocking the potential: analyzing 3D microstructure of small-scale cement samples from space using deep learning	29
Effects of caffeine and blue-enriched light on spare visual attention during simulated space teleoperation	28
Harmonizing heterogeneous transcriptomics datasets for machine learning-based analysis to identify spaceflown murine liver-specific changes	27
Changes in real-world walking speed following 60-day bed-rest	19
Diffusion in liquid mixtures	19
Using single-sample networks to identify the contrasting patterns of gene interactions and reveal the radiation dose-dependent effects in multiple tissues of spaceflight mice	18
Autonomous electrochemical system for ammonia oxidation reaction measurements at the International Space Station	18
Establishing a method for the cryopreservation of viable peripheral blood mononuclear cells in the International Space Station	17
Explainable machine learning identifies multi-omics signatures of muscle response to spaceflight in mice	17
The kidney, volume homeostasis and osmoregulation in space: current perspective and knowledge gaps	17
Stressors affect human motor timing during spaceflight	17
How to obtain an integrated picture of the molecular networks involved in adaptation to microgravity in different biological systems?	17
Examining the influence of turbulence on viscosity measurements of molten germanium under reduced gravity	16

Effect of microgravity on mechanical loadings in lumbar spine at various postures: a numerical study	16
Vection underwater illustrates the limitations of neutral buoyancy as a microgravity analog	15
Microgravity triggers ferroptosis and accelerates senescence in the MG-63 cell model of osteoblastic cells	15
Simplified equations for object trajectories in rotating space habitats and space juggling	15
Nitrogen accountancy in space agriculture	15
Plant and microbial science and technology as cornerstones to Bioregenerative Life Support Systems in space	15
Impacts of radiation exposure, hindlimb unloading, and recovery on murine skeletal muscle cell telomere length	15
Demonstration for cold atmospheric pressure plasma jet operation and antibacterial action in microgravity	15
Enhanced assembly of bacteriophage T7 produced in cell-free reactions under simulated microgravity	14
Sensorimotor adaptation of locomotor synergies to gravitational constraint	14
Behavior of glioblastoma brain tumor stem cells following a suborbital rocket flight: reaching the “edge” of outer space	14
Time-dependent unloading effects on muscle and bone and involvement of FNDC5/irisin axis	13
Author Correction: Transcriptional responses of skeletal stem/progenitor cells to hindlimb unloading and recovery correlate with localized but not systemic multi-systems impacts	13
Testing 3D printed biological platform for advancing simulated microgravity and space mechanobiology research	13
The MyoGravity project to study real microgravity effects on human muscle precursor cells and tissue	13
Towards sustainable human space exploration—priorities for radiation research to quantify and mitigate radiation risks	13
Spaceflight increases sarcoplasmic reticulum Ca2+ leak and this cannot be counteracted with BuOE treatment	13
Hypergravity is more challenging than microgravity for the human sensorimotor system	12
Effect of artificial gravity on neurocognitive performance during head-down tilt bedrest	12
Ocular complaints and diagnoses in spaceflight	12
Altered sleep spindles and slow waves during space shuttle missions	12
Water droplet evaporation in varied gravity and electric fields	12
NASA Space Flight Human-System Standard: enabling human spaceflight missions by supporting astronaut health, safety, and performance	11
Challenges for the human immune system after leaving Earth	11
TRPML1 ion channel promotes HepaRG cell differentiation under simulated microgravity conditions	11
Trabecular bone organoids: a micron-scale ‘humanised’ prototype designed to study the effects of microgravity and degeneration	11
Management of corneal injuries in spaceflight and recommendations for planetary missions	11
The space cold atom interferometer for testing the equivalence principle in the China Space Station	11
Space exploration and risk of Parkinson’s disease: a perspective review	11
Microgravity crystallization of perdeuterated tryptophan synthase for neutron diffraction	10
Meta-analysis of the space flight and microgravity response of the Arabidopsis plant transcriptome	10
Profiling muscle transcriptome in mice exposed to microgravity using gene set enrichment analysis	10
Amyloidogenesis via interfacial shear in a containerless biochemical reactor aboard the International Space Station	10
Musculoskeletal research in human space flight – unmet needs for the success of crewed deep space exploration	10
Growth and mineralization of fetal mouse long bones under microgravity and daily 1 g gravity exposure	10
Paving the way to better understand the effects of prolonged spaceflight on operational performance and its neural bases	10
Rare diseases and space health: optimizing synergies from scientific questions to care	10
Evaluating the lettuce metatranscriptome with MinION sequencing for future spaceflight food production applications	9
The international space station packed bed reactor experiment: capillary effects in gas-liquid two-phase flows	9
Author Correction: Hydrogel mechanical properties in altered gravity	9
Flight test results for microgravity active vibration isolation system on-board Chinese Space Station	9
The ejection of large non-oscillating droplets from a hydrophobic wedge in microgravity	9
Planetary extravehicular activity (EVA) risk mitigation strategies for long-duration space missions	9
Proprioceptive disturbances in weightlessness revisited	9
Numerical characterization of astronaut CaOx renal stone incidence rates to quantify in-flight and post-flight relative risk	9
Systematic screening of 42 vancomycin-resistant Enterococcus faecium strains for resistance, biofilm, and desiccation in simulated microgravity	9
Future space experiment platforms for astrobiology and astrochemistry research	9
Robot-assisted surgery in space: pros and cons. A review from the surgeon’s point of view	9
Equivalence of sessile droplet dynamics under periodic and steady electric fields	9
Exosome based analysis for Space Associated Neuro-Ocular Syndrome and health risks in space exploration	8

Dynamic changes in perivascular space morphology predict signs of spaceflight-associated neuro-ocular syndrome in bed rest	8
Weightlessness leads to an increase granulosa cells in the growing follicle	8
Scientific perspectives on lunar exploration in Europe	8
Demonstration of charge-hold-vent (CHV) and no-vent-fill (NVF) in a simulated propellent storage tank during tank-to-tank cryogen transfer in microgravity	8
Viability of internal comparisons for epidemiological research in the US astronaut corps	8
Is contact-line mobility a material parameter?	8
Microgravity studies of solidification patterns in model transparent alloys onboard the International Space Station	8
Plyometric training increases thickness and volume of knee articular cartilage in mice	8
The effect of bubble nucleation on the performance of a wickless heat pipe in microgravity	8
Perspectives on the physics of late-type stars from beyond low earth orbit, the moon and mars	8
Response of cardiac pulse parameters in humans at various inclinations via 360° rotating platform for simulated microgravity perspective	8
Unraveling dispersion and buoyancy dynamics around radial A + B → C reaction fronts: microgravity experiments and numerical simulations	8
Spaceflight on the ISS changed the skeletal muscle proteome of two astronauts	8
Validated space radiation exposure predictions from earth to mars during Artemis-I	8
Pathophysiology, risk, diagnosis, and management of venous thrombosis in space: where are we now?	8
Space hardware for concrete sample production on ISS “MASON concrete mixer”	8