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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July 2021Cellular remains in a ~3.42-billion-year-old subseafloor hydrothermal environment

Cavalazzi, B., Lemelle, L., Simionovici, A., Cady, S. L., Russell, M. J., Bailo, E., … Hofmann, A. (2021). Cellular remains in a ~3.42-billion-year-old subseafloor hydrothermal environment. Science Advances, 7(29), eabf3963. doi:10.1126/sciadv.abf3963

Modeling global-scale mass flows on the Lagrangian satellites of Dione and Tethys

Umurhan, O. M., Howard, A. D., White, O. L., Schenk, P. M., & Moore, J. M. (2021). Modeling global-scale mass flows on the Lagrangian satellites of Dione and Tethys. Icarus, None, 114612. doi:10.1016/j.icarus.2021.114612

The Science Case for a Return to Enceladus

Cable, M. L., Porco, C., Glein, C. R., German, C. R., MacKenzie, S. M., Neveu, M., … Núñez, J. (2021). The Science Case for a Return to Enceladus. The Planetary Science Journal, 2(4), 132. doi:10.3847/psj/abfb7a

Microstructural features in carbonates from Antarctic micrometeorites: Effective tools for analyzing the evolution of small Solar System bodies

Dobrica, E., Ohtaki, K., & Engrand, C. (2021). Microstructural features in carbonates from Antarctic micrometeorites: Effective tools for analyzing the evolution of small Solar System bodies. Microscopy and Microanalysis, 27(S1), 2778–2781. doi:10.1017/s1431927621009740

Behavior of the Mo, Tl, and U isotope systems during differentiation in the Kilauea Iki lava lake

Gaschnig, R. M., Rader, S. T., Reinhard, C. T., Owens, J. D., Planavsky, N., Wang, X., … Helz, R. (2021). Behavior of the Mo, Tl, and U isotope systems during differentiation in the Kilauea Iki lava lake. Chemical Geology, 574, 120239. doi:10.1016/j.chemgeo.2021.120239

Aspartic acid racemization and repair in the survival and recovery of hyperthermophiles after prolonged starvation at high temperature

Liang, R., Robb, F. T., & Onstott, T. C. (2021). Aspartic acid racemization and repair in the survival and recovery of hyperthermophiles after prolonged starvation at high temperature. FEMS Microbiology Ecology. doi:10.1093/femsec/fiab112

Transmission Spectroscopy of the Earth–Sun System to Inform the Search for Extrasolar Life

Mayorga, L. C., Lustig-Yaeger, J., May, E. M., Sotzen, K. S., Gonzalez-Quiles, J., Kilpatrick, B. M., … Izenberg, N. R. (2021). Transmission Spectroscopy of the Earth–Sun System to Inform the Search for Extrasolar Life. The Planetary Science Journal, 2(4), 140. doi:10.3847/psj/ac0c85

Anoxic depositional overprinting of 238U/235U in calcite: When do carbonates tell black shale tales?

Chen, X., Romaniello, S. J., McCormick, M., Sherry, A., Havig, J. R., Zheng, W., & Anbar, A. D. (2021). Anoxic depositional overprinting of 238U/235U in calcite: When do carbonates tell black shale tales? Geology. doi:10.1130/g48949.1

Organic matter in carbonaceous chondrite lithologies of Almahata Sitta: Incorporation of previously unsampled carbonaceous chondrite lithologies into ureilitic regolith

Kebukawa, Y., Zolensky, M. E., Goodrich, C. A., Ito, M., Ogawa, N. O., Takano, Y., … Sandford, S. (2021). Organic matter in carbonaceous chondrite lithologies of Almahata Sitta: Incorporation of previously unsampled carbonaceous chondrite lithologies into ureilitic regolith. Meteoritics & Planetary Science, 56(7), 1311–1327. doi:10.1111/maps.13713

Investigation of the Origins of Comets as Revealed through Infrared High-resolution Spectroscopy I. Molecular Abundances

Lippi, M., Villanueva, G. L., Mumma, M. J., & Faggi, S. (2021). Investigation of the Origins of Comets as Revealed through Infrared High-resolution Spectroscopy I. Molecular Abundances. The Astronomical Journal, 162(2), 74. doi:10.3847/1538-3881/abfdb7

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