| # | Title | Journal | Year | Citations |
|---|
| 1 | Mass-Independent Fractionation of Sulfur Isotopes in Archean Sediments: Strong Evidence for an Anoxic Archean Atmosphere | Astrobiology | 2002 | 781 |
| 2 | Remote Sensing of Planetary Properties and Biosignatures on Extrasolar Terrestrial Planets | Astrobiology | 2002 | 433 |
| 3 | Biosignatures from Earth-Like Planets Around M Dwarfs | Astrobiology | 2005 | 417 |
| 4 | Extreme Water Loss and Abiotic O2Buildup on Planets Throughout the Habitable Zones of M Dwarfs | Astrobiology | 2015 | 393 |
| 5 | Ground-Based Facilities for Simulation of Microgravity: Organism-Specific Recommendations for Their Use, and Recommended Terminology | Astrobiology | 2013 | 372 |
| 6 | Habitability on Early Mars and the Search for Biosignatures with the ExoMars Rover | Astrobiology | 2017 | 371 |
| 7 | Temperature and Moisture Conditions for Life in the Extreme Arid Region of the Atacama Desert: Four Years of Observations Including the El Niño of 1997–1998 | Astrobiology | 2003 | 344 |
| 8 | The Effect of a Strong Stellar Flare on the Atmospheric Chemistry of an Earth-like Planet Orbiting an M Dwarf | Astrobiology | 2010 | 335 |
| 9 | M Stars as Targets for Terrestrial Exoplanet Searches And Biosignature Detection | Astrobiology | 2007 | 330 |
| 10 | Exoplanet Biosignatures: A Review of Remotely Detectable Signs of Life | Astrobiology | 2018 | 328 |
| 11 | Ozone Concentrations and Ultraviolet Fluxes on Earth-Like Planets Around Other Stars | Astrobiology | 2003 | 317 |
| 12 | A New Analysis of Mars “Special Regions”: Findings of the Second MEPAG Special Regions Science Analysis Group (SR-SAG2) | Astrobiology | 2014 | 317 |
| 13 | Spectral Signatures of Photosynthesis. I. Review of Earth Organisms | Astrobiology | 2007 | 313 |
| 14 | A Revised, Hazy Methane Greenhouse for the Archean Earth | Astrobiology | 2008 | 301 |
| 15 | Endolithic Cyanobacteria in Halite Rocks from the Hyperarid Core of the Atacama Desert | Astrobiology | 2006 | 295 |
| 16 | A Reappraisal of The Habitability of Planets around M Dwarf Stars | Astrobiology | 2007 | 286 |
| 17 | The NASA Astrobiology Roadmap | Astrobiology | 2008 | 278 |
| 18 | Why O2Is Required by Complex Life on Habitable Planets and the Concept of Planetary "Oxygenation Time" | Astrobiology | 2005 | 276 |
| 19 | Vegetation's Red Edge: A Possible Spectroscopic Biosignature of Extraterrestrial Plants | Astrobiology | 2005 | 275 |
| 20 | Serpentinization and Its Implications for Life on the Early Earth and Mars | Astrobiology | 2006 | 264 |
| 21 | The Hot Spring Hypothesis for an Origin of Life | Astrobiology | 2020 | 257 |
| 22 | Coronal Mass Ejection (CME) Activity of Low Mass M Stars as An Important Factor for The Habitability of Terrestrial Exoplanets. II. CME-Induced Ion Pick Up of Earth-like Exoplanets in Close-In Habitable Zones | Astrobiology | 2007 | 256 |
| 23 | Preservation of Martian Organic and Environmental Records: Final Report of the Mars Biosignature Working Group | Astrobiology | 2011 | 255 |
| 24 | Spectral Signatures of Photosynthesis. II. Coevolution with Other Stars And The Atmosphere on Extrasolar Worlds | Astrobiology | 2007 | 253 |
| 25 | Habitability: A Review | Astrobiology | 2016 | 246 |
| 26 | The Origin of Life in Alkaline Hydrothermal Vents | Astrobiology | 2016 | 245 |
| 27 | Morphological Biosignatures and the Search for Life on Mars | Astrobiology | 2003 | 244 |
| 28 | Microbial Populations in Antarctic Permafrost: Biodiversity, State, Age, and Implication for Astrobiology | Astrobiology | 2007 | 243 |
| 29 | Habitable Zone Limits for Dry Planets | Astrobiology | 2011 | 240 |
| 30 | The Drive to Life on Wet and Icy Worlds | Astrobiology | 2014 | 232 |
| 31 | The First Cell Membranes | Astrobiology | 2002 | 231 |
| 32 | Microbially Induced Sedimentary Structures Recording an Ancient Ecosystem in theca.3.48 Billion-Year-Old Dresser Formation, Pilbara, Western Australia | Astrobiology | 2013 | 231 |
| 33 | Defining Life | Astrobiology | 2010 | 229 |
| 34 | The Pale Orange Dot: The Spectrum and Habitability of Hazy Archean Earth | Astrobiology | 2016 | 229 |
| 35 | Survival of Rock-Colonizing Organisms After 1.5 Years in Outer Space | Astrobiology | 2012 | 227 |
| 36 | Hydrothermal Systems in Small Ocean Planets | Astrobiology | 2007 | 213 |
| 37 | Influence of Ionic Inorganic Solutes on Self-Assembly and Polymerization Processes Related to Early Forms of Life: Implications for a Prebiotic Aqueous Medium | Astrobiology | 2002 | 211 |
| 38 | Coronal Mass Ejection (CME) Activity of Low Mass M Stars as An Important Factor for The Habitability of Terrestrial Exoplanets. I. CME Impact on Expected Magnetospheres of Earth-Like Exoplanets in Close-In Habitable Zones | Astrobiology | 2007 | 211 |
| 39 | Biosignatures on Mars: What, Where, and How? Implications for the Search for Martian Life | Astrobiology | 2015 | 209 |
| 40 | The NASA Roadmap to Ocean Worlds | Astrobiology | 2019 | 209 |
| 41 | Necessary, but Not Sufficient: Raman Identification of Disordered Carbon as a Signature of Ancient Life | Astrobiology | 2003 | 197 |
| 42 | Lichens Survive in Space: Results from the 2005 LICHENS Experiment | Astrobiology | 2007 | 196 |
| 43 | Exoplanet Biosignatures: Understanding Oxygen as a Biosignature in the Context of Its Environment | Astrobiology | 2018 | 194 |
| 44 | Raman Imagery: A New Approach to Assess the Geochemical Maturity and Biogenicity of Permineralized Precambrian Fossils | Astrobiology | 2005 | 193 |
| 45 | Aqueous Corrosion of Phosphide Minerals from Iron Meteorites: A Highly Reactive Source of Prebiotic Phosphorus on the Surface of the Early Earth | Astrobiology | 2005 | 190 |
| 46 | The Raman Laser Spectrometer for the ExoMars Rover Mission to Mars | Astrobiology | 2017 | 186 |
| 47 | The Mars Organic Molecule Analyzer (MOMA) Instrument: Characterization of Organic Material in Martian Sediments | Astrobiology | 2017 | 185 |
| 48 | Energy, Chemical Disequilibrium, and Geological Constraints on Europa | Astrobiology | 2007 | 181 |
| 49 | Cave Biosignature Suites: Microbes, Minerals, and Mars | Astrobiology | 2001 | 179 |
| 50 | Climate Model Studies of Synchronously Rotating Planets | Astrobiology | 2003 | 178 |
