NASA Astrobiology

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Emerging Trends in Comet Taxonomy. “Emerging trends and a comet taxonomy based on the volatile chemistry measured in thirty comets with high-resolution infrared spectroscopy between 1997 and 2013.” in Icarus

Cycles of Glaciation on Ancient Mars. “Climate Cycling on Early Mars Caused by the Carbonate-Silicate Cycle” in Earth and Planetary Astrophysics.

Methane Muted: How Did Early Earth Stay Warm?. “A proper accounting of biogeochemical cycles in the oceans reveals that methane has a much more powerful foe than oxygen.” in PNAS

Emerging Trends in Comet Taxonomy“Emerging trends and a comet taxonomy based on the volatile chemistry measured in thirty comets with high-resolution infrared spectroscopy between 1997 and 2013.” in Icarus01/03

Cycles of Glaciation on Ancient Mars“Climate Cycling on Early Mars Caused by the Carbonate-Silicate Cycle” in Earth and Planetary Astrophysics.02/03

Methane Muted: How Did Early Earth Stay Warm?“A proper accounting of biogeochemical cycles in the oceans reveals that methane has a much more powerful foe than oxygen.” in PNAS03/03

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October 2023Endogenous CO2 ice mixture on the surface of Europa and no detection of plume activity

Villanueva, G. L., Hammel, H. B., Milam, S. N., Kofman, V., Hand, K. P., Paganini, L., Stansberry, J., Liuzzi, G. (2023). Endogenous CO2 ice mixture on the surface of Europa and no detection of plume activity. Science, 381(6664), 1305-1308. doi: 10.1126/science.adg4270

September 2023Characterization of aqueous alteration and formation of salty exposures at Ius Chasma, Mars

Wilk, K., Bishop, J. L., Weitz, C. M., Parente, M., Saranathan, A. M., Itoh, Y., … Seelos, F. (2023). Characterization of aqueous alteration and formation of salty exposures at Ius Chasma, Mars. Icarus, None, 115800. doi:10.1016/j.icarus.2023.115800

A robust, agnostic molecular biosignature based on machine learning

Cleaves, H. J., Hystad, G., Prabhu, A., Wong, M. L., Cody, G. D., Economon, S., & Hazen, R. M. (2023). A robust, agnostic molecular biosignature based on machine learning. Proceedings of the National Academy of Sciences, 120(41), None. doi:10.1073/pnas.2307149120

Reconciling biogeochemical redox proxies: Tracking variable bottom water oxygenation during OAE-2 using vanadium isotopes

Li, S., Friedrich, O., Nielsen, S. G., Wu, F., & Owens, J. D. (2023). Reconciling biogeochemical redox proxies: Tracking variable bottom water oxygenation during OAE-2 using vanadium isotopes. Earth and Planetary Science Letters, 617, 118237. doi:10.1016/j.epsl.2023.118237

Canyon Diablo lonsdaleite is a nanocomposite containing c/h stacking disordered diamond and diaphite

Németh, P., Garvie, L. A. J., & Salzmann, C. G. (2023). Canyon Diablo lonsdaleite is a nanocomposite containing c/h stacking disordered diamond and diaphite. Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 381(2259), None. doi:10.1098/rsta.2022.0344

Assessment of Stoichiometric Autocatalysis across Element Groups

Peng, Z., Adam, Z. R., Fahrenbach, A. C., & Kaçar, B. (2023). Assessment of Stoichiometric Autocatalysis across Element Groups. Journal of the American Chemical Society. doi:10.1021/jacs.3c07041

Screening for Novel Fluorescent Nucleobase Analogues Using Computational and Experimental Methods: 2-Amino-6-chloro-8-vinylpurine (2A6Cl8VP) as a Case Study

Russel, N. S., Kodali, G., Stanley, R. J., & Narayanan, M. (2023). Screening for Novel Fluorescent Nucleobase Analogues Using Computational and Experimental Methods: 2-Amino-6-chloro-8-vinylpurine (2A6Cl8VP) as a Case Study. The Journal of Physical Chemistry B. doi:10.1021/acs.jpcb.3c03618

Peptide conjugates with polyaromatic hydrocarbons can benefit the activity of catalytic RNAs

Sweeney, K. J., Le, T., Jorge, M. Z., Schellinger, J. G., Leman, L. J., & Müller, U. F. (2023). Peptide conjugates with polyaromatic hydrocarbons can benefit the activity of catalytic RNAs. Chemical Science. doi:10.1039/d3sc03540a

Carbonyl Migration in Uronates Affords a Potential Prebiotic Pathway for Pentose Production

Yi, R., Mojica, M., Fahrenbach, A. C., James Cleaves, H., Krishnamurthy, R., & Liotta, C. L. (2023). Carbonyl Migration in Uronates Affords a Potential Prebiotic Pathway for Pentose Production. JACS Au. doi:10.1021/jacsau.3c00299

Col-OSSOS: Evidence for a Compositional Gradient Inherited from the Protoplanetary Disk?

Marsset, M., Fraser, W. C., Schwamb, M. E., Buchanan, L. E., Pike, R. E., Volk, K., … Kavelaars, J. J. (2023). Col-OSSOS: Evidence for a Compositional Gradient Inherited from the Protoplanetary Disk? The Planetary Science Journal, 4(9), 160. doi:10.3847/psj/ace7d0

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