(The TQCC of Astrobiology is 9. The table below lists those papers that are above that threshold based on CrossRef citation counts [max. 500 papers]. The publications cover those that have been published in the past four years, i.e., from 2019-09-01 to 2023-09-01.)
The Hot Spring Hypothesis for an Origin of Life209
Earth's Impact Events Through Geologic Time: A List of Recommended Ages for Terrestrial Impact Structures and Deposits90
Phosphine as a Biosignature Gas in Exoplanet Atmospheres77
Oxia Planum: The Landing Site for the ExoMars “Rosalind Franklin” Rover Mission: Geological Context and Prelanding Interpretation76
Hydrothermal Chemistry and the Origin of Cellular Life60
Oxygenation, Life, and the Planetary System during Earth's Middle History: An Overview56
Toward the RNA-World in the Interstellar Medium—Detection of Urea and Search of 2-Amino-oxazole and Simple Sugars56
Deciphering Biosignatures in Planetary Contexts55
The Venusian Lower Atmosphere Haze as a Depot for Desiccated Microbial Life: A Proposed Life Cycle for Persistence of the Venusian Aerial Biosphere55
Paleo-Rock-Hosted Life on Earth and the Search on Mars: A Review and Strategy for Exploration50
The Role of Meteorite Impacts in the Origin of Life48
Terrestrial Hot Spring Systems: Introduction48
The Case for Ancient Hot Springs in Gusev Crater, Mars44
Mars Extant Life: What's Next? Conference Report44
First Detections of Dichlorobenzene Isomers and Trichloromethylpropane from Organic Matter Indigenous to Mars Mudstone in Gale Crater, Mars: Results from the Sample Analysis at Mars Instrument Onboard43
Ceres: Astrobiological Target and Possible Ocean World40
Fluvial Regimes, Morphometry, and Age of Jezero Crater Paleolake Inlet Valleys and Their Exobiological Significance for the 2020 Rover Mission Landing Site38
Phosphine on Venus Cannot Be Explained by Conventional Processes34
Venus, an Astrobiology Target31
Elements for the Origin of Life on Land: A Deep-Time Perspective from the Pilbara Craton of Western Australia30
Morphological and Spectral Diversity of the Clay-Bearing Unit at the ExoMars Landing Site Oxia Planum30
Analog Experiments for the Identification of Trace Biosignatures in Ice Grains from Extraterrestrial Ocean Worlds29
Discriminating Abiotic and Biotic Fingerprints of Amino Acids and Fatty Acids in Ice Grains Relevant to Ocean Worlds29
The Intersection of Geology, Geochemistry, and Microbiology in Continental Hydrothermal Systems25
Cometary Delivery of Hydrogen Cyanide to the Early Earth25
Bacterial Growth in Chloride and Perchlorate Brines: Halotolerances and Salt Stress Responses ofPlanococcus halocryophilus24
Understanding Hypervelocity Sampling of Biosignatures in Space Missions23
Enceladus: First Observed Primordial Soup Could Arbitrate Origin-of-Life Debate23
Water Activities of Acid Brine Lakes Approach the Limit for Life23
Earth-like Habitable Environments in the Subsurface of Mars23
One-Pot Hydrogen Cyanide-Based Prebiotic Synthesis of Canonical Nucleobases and Glycine Initiated by High-Velocity Impacts on Early Earth21
Investigating Habitability with an Integrated Rock-Climbing Robot and Astrobiology Instrument Suite21
The Timing of Evolutionary Transitions Suggests Intelligent Life is Rare21
Formation and Preservation of Microbial Palisade Fabric in Silica Deposits from El Tatio, Chile21
Biomarker Profiling of Microbial Mats in the Geothermal Band of Cerro Caliente, Deception Island (Antarctica): Life at the Edge of Heat and Cold21
A Reconstructed Subaerial Hot Spring Field in the ∼3.5 Billion-Year-Old Dresser Formation, North Pole Dome, Pilbara Craton, Western Australia20
Biomolecules from Fossilized Hot Spring Sinters: Implications for the Search for Life on Mars20
Abiotic Synthesis of Nucleoside 5′-Triphosphates with Nickel Borate and Cyclic Trimetaphosphate (CTMP)19
Circular Spectropolarimetric Sensing of Vegetation in the Field: Possibilities for the Remote Detection of Extraterrestrial Life19
Simulating Mars Drilling Mission for Searching for Life: Ground-Truthing Lipids and Other Complex Microbial Biomarkers in the Iron-Sulfur Rich Río Tinto Analog17
Lichen Vitality After a Space Flight on Board the EXPOSE-R2 Facility Outside the International Space Station: Results of the Biology and Mars Experiment17
Lipid Biomarker Record of the Serpentinite-Hosted Ecosystem of the Samail Ophiolite, Oman and Implications for the Search for Biosignatures on Mars17
Catalytic Synthesis of Polyribonucleic Acid on Prebiotic Rock Glasses17
Magma Ocean Evolution of the TRAPPIST-1 Planets17
Potential for Phototrophy in Venus' Clouds17
Simulating Serpentinization as It Could Apply to the Emergence of Life Using the JPL Hydrothermal Reactor17
Fusarium oxysporumas an Opportunistic Fungal Pathogen onZinnia hybridaPlants Grown on board the International Space Station17
BioSentinel: Long-Term Saccharomyces cerevisiae Preservation for a Deep Space Biosensor Mission17
Large Mass-Independent Oxygen Isotope Fractionations in Mid-Proterozoic Sediments: Evidence for a Low-Oxygen Atmosphere?16
ExoMars Raman Laser Spectrometer: A Tool for the Potential Recognition of Wet-Target Craters on Mars16
Bacterial Cellulose Retains Robustness but Its Synthesis Declines After Exposure to a Mars-like Environment Simulated Outside the International Space Station16
Estimated Minimum Life Span of the Jezero Fluvial Delta (Mars)15
BioSentinel: A Biological CubeSat for Deep Space Exploration15
Metabolomics as an Emerging Tool in the Search for Astrobiologically Relevant Biomarkers15
Thiophenes on Mars: Biotic or Abiotic Origin?15
The Complex Molecules Detector (CMOLD): A Fluidic-Based Instrument Suite to Search for (Bio)chemical Complexity on Mars and Icy Moons15
The Detection of Elemental Signatures of Microbes in Martian Mudstone Analogs Using High Spatial Resolution Laser Ablation Ionization Mass Spectrometry15
Phosphine Generation Pathways on Rocky Planets15
Mawrth Vallis, Mars: A Fascinating Place for Future In Situ Exploration15
The Albedo of Ryugu: Evidence for a High Organic Abundance, as Inferred from the Hayabusa2 Touchdown Maneuver14
Timescales for Prebiotic Photochemistry Under Realistic Surface Ultraviolet Conditions14
Physiology, Metabolism, and Fossilization of Hot-Spring Filamentous Microbial Mats14
The Production and Potential Detection of Hexamethylenetetramine-Methanol in Space14
Nucleic Acid Extraction and Sequencing from Low-Biomass Synthetic Mars Analog Soils forIn SituLife Detection14
Microbial Sulfur Isotope Fractionation in the Chicxulub Hydrothermal System14
Organic Records of Early Life on Mars: The Role of Iron, Burial, and Kinetics on Preservation14
An Alternative Approach for Assessing Biogenicity13
In Search for a Planet Better than Earth: Top Contenders for a Superhabitable World13
Growth ofLactobacillus reuteriDSM17938 Under Two Simulated Microgravity Systems: Changes in Reuterin Production, Gastrointestinal Passage Resistance, and Stress Genes Expression Response13
Biosignature Analysis of Mars Soil Analogs from the Atacama Desert: Challenges and Implications for Future Missions to Mars13
Assessment of Isoprene as a Possible Biosignature Gas in Exoplanets with Anoxic Atmospheres13
In Situ Geochronology on Mars and the Development of Future Instrumentation13
The Limits, Capabilities, and Potential for Life Detection with MinION Sequencing in a Paleochannel Mars Analog13
Exo-Ocean Exploration with Deep-Sea Sensor and Platform Technologies13
Comprehensive Search of Stable Isomers of Alanine and Alanine Precursors in Prebiotic Syntheses13
Boron Isotopes in the Puga Geothermal System, India, and Their Implications for the Habitat of Early Life12
The Venus Life Equation12
The Search for a Signature of Life on Mars: A Biogeomorphological Approach12
Assessment of Ammonia as a Biosignature Gas in Exoplanet Atmospheres12
Preliminary Planning for Mars Sample Return (MSR) Curation Activities in a Sample Receiving Facility (SRF)12
Exobiology of the Venusian Clouds: New Insights into Habitability through Terrestrial Models and Methods of Detection12
Bacterial Diversity of a High-Altitude Permafrost Thaw Pond Located on Ojos del Salado (Dry Andes, Altiplano-Atacama Region)11
Thermal Heads for Melt Drilling to Subglacial Lakes: Design and Testing11
Determining the “Biosignature Threshold” for Life Detection on Biotic, Abiotic, or Prebiotic Worlds11
Cometary Glycolaldehyde as a Source of pre-RNA Molecules11
ExoMars Raman Laser Spectrometer: A Tool to Semiquantify the Serpentinization Degree of Olivine-Rich Rocks on Mars11
When is Life a Viable Hypothesis? The Case of Venusian Phosphine11
Obliquity Evolution of the Potentially Habitable Exoplanet Kepler-62f10
Screening the Survival of Cyanobacteria Under Perchlorate Stress. Potential Implications for Mars In Situ Resource Utilization10
Investigation of Venus Cloud Aerosol and Gas Composition Including Potential Biogenic Materials via an Aerosol-Sampling Instrument Package10
Effects of Desiccation and Freezing on Microbial Ionizing Radiation Survivability: Considerations for Mars Sample Return10
Uninhabitable and Potentially Habitable Environments on Mars: Evidence from Meteorite ALH 8400110
Thermodynamic Impact of Mineral Surfaces on Amino Acid Polymerization: Aspartate Dimerization on Goethite10
What Is Life—and When Do We Search for It on Other Worlds10
Phosphorus in the Clouds of Venus: Potential for Bioavailability10
The AMADEE-18 Mars Analog Expedition in the Dhofar Region of Oman10
The Italian National Project of Astrobiology—Life in Space—Origin, Presence, Persistence of Life in Space, from Molecules to Extremophiles10
Ancient Oil as a Source of Carbonaceous Matter in 1.88-Billion-Year-Old Gunflint Stromatolites and Microfossils10
Microgravity Affects the Level of Matrix Polysaccharide 1,3:1,4-β-Glucans in Cell Walls of Rice Shoots by Increasing the Expression Level of a Gene Involved in Their Breakdown9
Lipid Biomarkers in Ephemeral Acid Salt Lake Mudflat/Sandflat Sediments: Implications for Mars9
Space Radiation Dosimetry at the Exposure Facility of the International Space Station for the Tanpopo Mission9
Rapid Radiolytic Degradation of Amino Acids in the Martian Shallow Subsurface: Implications for the Search for Extinct Life9
Chemical Ionization Mass Spectrometry: Applications for the In Situ Measurement of Nonvolatile Organics at Ocean Worlds9
Greenalite Nanoparticles in Alkaline Vent Plumes as Templates for the Origin of Life9
Trace Element Concentrations in Hydrothermal Silica Deposits as a Potential Biosignature9
Observational Constraints on the Great Filter9
Science Objectives for Flagship-Class Mission Concepts for the Search for Evidence of Life at Enceladus9
Laboratory Analysis of Returned Samples from the AMADEE-18 Mars Analog Mission9
Influence of Calcium Perchlorate on the Search for Organics on Mars with Tetramethylammonium Hydroxide Thermochemolysis9
Detection and Degradation of Adenosine Monophosphate in Perchlorate-Spiked Martian Regolith Analog, by Deep-Ultraviolet Spectroscopy9
Detection of Biosignatures by Capillary Electrophoresis Mass Spectrometry in the Presence of Salts Relevant to Ocean Worlds Missions9
Nitrogen Fixation at Early Mars9
Are Impact Craters and Extinction Episodes Periodic? Implications for Planetary Science and Astrobiology9
Cold, Dry, Windy, and UV Irradiated: Surveying Mars-Relevant Conditions in Ojos del Salado Volcano (Andes Mountains, Chile)9
Habitability Models for Astrobiology9