Astrobiology

Considerations for Detecting Organic Indicators of Metabolism on Enceladus
Barge et al. – Astrobiology

Astrobiological applications of μ-mapping X-ray fluorescence spectrometry
Blake et al. – International Journal of Astrobiology

Chapter 5: Major Biological Innovations in the History of Life on Earth
Bozdag et al. – Astrobiology

Fluorescence Microscopy with Deep UV, Near UV, and Visible Excitation for In Situ Detection of Microorganisms
Case et al. – Astrobiology

Chapter 8: Searching for Life Beyond Earth
Chou et al. – Astrobiology

Chapter 2: What Is Life?
Colón-Santos et al. – Astrobiology

LHS 1140 b is a potentially habitable water world
Damiano et al. – preprint

Chapter 9: Life as We Don’t Know It
Grefenstette et al. – Astrobiology

How to identify cell material in a single ice grain emitted from Enceladus or Europa
Klenner et al. – Science Advances

The Massalia asteroid family as the origin of ordinary L chondrites
Marsset et al. – preprint

Chapter 10: Planetary Protection—History, Science, and the Future
McKaig et al. – Astrobiology

Foreword to the Astrobiology Primer 3.0
Mix – Astrobiology

How habitable are M-dwarf Exoplanets? Modeling surface conditions and exploring the role of melanins in the survival of Aspergillus niger spores under exoplanet-like radiation
Mota et al. – preprint

Chapter 4: A Geological and Chemical Context for the Origins of Life on Early Earth
Rodriguez et al. – Astrobiology

Chapter 1: The Astrobiology Primer 3.0
Schaible et al. – Astrobiology

Chapter 3: The Origins and Evolution of Planetary Systems
Schaible et al. – Astrobiology

Stability of 20 Biogenic Amino Acids in Concentrated Sulfuric Acid: Implications for the Habitability of Venus’ Clouds
Seager et al. – Astrobiology

An Agnostic Biosignature Based on Modeling Panspermia and Terraformation
Smith et al. – preprint

Chapter 7: Assessing Habitability Beyond Earth
Styczinski et al. – Astrobiology

Chapter 11: Astrobiology Education, Engagement, and Resources
Styczinski et al. – Astrobiology

Chapter 6: The Breadth and Limits of Life on Earth
Thweatt et al. – Astrobiology

Multiring basin formation constrains Europa’s ice shell thickness
Wakita et al. – Science Advances

Interstellar formation of glyceric acid [HOCH2CH(OH)COOH]—The simplest sugar acid
Wang et al. – Science Advances

NASA’s Mars rover probes ancient shorelines for signs of life
Voosen – preprint

Astrophysics

The POKEMON Speckle Survey of Nearby M Dwarfs. III. The Stellar Multiplicity Rate of M Dwarfs within 15 pc
Clark et al. – preprint

Do Temperate Rocky Planets Around M Dwarfs have an Atmosphere ?
Doyon – preprint

Biochemistry

High-Fidelity RNA Copying via 2′,3′-Cyclic Phosphate Ligation
Calaça Serrão et al. – Journal of the American Chemical Society

Chemistry

On the Salient Limitations of `On the Salient Limitations of the Methods of Assembly Theory and their Classification of Molecular Biosignatures’
Cronin – preprint

Primitive purine biosynthesis connects ancient geochemistry to modern metabolism
Goldford et al. – Nature Ecology & Evolution

Geochemistry

Ferredoxin reduction by hydrogen with iron functions as an evolutionary precursor of flavin-based electron bifurcation
Brabender et al. – Proceedings of the National Academy of Sciences

New study uncovers how hydrogen provided energy at life’s origin
Claussen et al. – preprint

Molecular biology

Entropy and chirality in sphinx tilings
Huber et al. – Physical Review Research

Planetary sciences

Ice? Salt? Pressure? Sediment deformation structures as evidence of late-stage shallow groundwater in Gale crater, Mars
Banham et al. – Geology

Balance and imbalance in biogeochemical cycles reflect the operation of closed, exchange, and open sets
Kemeny et al. – Proceedings of the National Academy of Sciences