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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September 2019When Did Life Likely Emerge on Earth in an RNA‐First Process?

Benner, S. A., Bell, E. A., Biondi, E., Brasser, R., Carell, T., Kim, H., … Trail, D. (2019). When Did Life Likely Emerge on Earth in an RNA‐First Process? ChemSystemsChem. doi:10.1002/syst.201900035

Bright Southern Variable Stars in the bRing Survey

Mellon, S. N., Mamajek, E. E., Stuik, R., Zwintz, K., Kenworthy, M. A., J. Talens, G. J., … Ireland, M. J. (2019). Bright Southern Variable Stars in the bRing Survey. The Astrophysical Journal Supplement Series, 244(1), 15. doi:10.3847/1538-4365/ab3662

OSSOS. XIX. Testing Early Solar System Dynamical Models Using OSSOS Centaur Detections

Nesvorný, D., Vokrouhlický, D., Stern, A. S., Davidsson, B., Bannister, M. T., Volk, K., … Alexandersen, M. (2019). OSSOS. XIX. Testing Early Solar System Dynamical Models Using OSSOS Centaur Detections. The Astronomical Journal, 158(3), 132. doi:10.3847/1538-3881/ab3651

The Impact of Stripped Cores on the Frequency of Earth-size Planets in the Habitable Zone

Pascucci, I., Mulders, G. D., & Lopez, E. (2019). The Impact of Stripped Cores on the Frequency of Earth-size Planets in the Habitable Zone. The Astrophysical Journal, 883(1), L15. doi:10.3847/2041-8213/ab3dac

An Exo–Kuiper Belt with an Extended Halo around HD 191089 in Scattered Light

Ren, B., Choquet, É., Perrin, M. D., Duchêne, G., Debes, J. H., Pueyo, L., … Norman, C. (2019). An Exo–Kuiper Belt with an Extended Halo around HD 191089 in Scattered Light. The Astrophysical Journal, 882(1), 64. doi:10.3847/1538-4357/ab3403

Uranium isotope evidence for limited euxinia in mid-Proterozoic oceans

Gilleaudeau, G. J., Romaniello, S. J., Luo, G., Kaufman, A. J., Zhang, F., Klaebe, R. M., … Anbar, A. D. (2019). Uranium isotope evidence for limited euxinia in mid-Proterozoic oceans. Earth and Planetary Science Letters, 521, 150–157. doi:10.1016/j.epsl.2019.06.012

Genome Sequence of Mariprofundus sp. Strain EBB-1, a Novel Marine Autotroph Isolated from an Iron-Sulfur Mineral

Lopez, A., Albino, D., Beraki, S., Broomell, S., Canela, R., Dingmon, T., … Amend, J. P. (2019). Genome Sequence of Mariprofundus sp. Strain EBB-1, a Novel Marine Autotroph Isolated from an Iron-Sulfur Mineral. Microbiology Resource Announcements, 8(39), None. doi:10.1128/mra.00995-19

August 2019Aspartic acid racemization constrains long-term viability and longevity of endospores

Liang, R., Lau, M., Baars, O., Robb, F. T., & Onstott, T. C. (2019). Aspartic acid racemization constrains long-term viability and longevity of endospores. FEMS Microbiology Ecology. doi:10.1093/femsec/fiz132

Rapid classification of TESS planet candidates with convolutional neural networks

Osborn, H. P., Ansdell, M., Ioannou, Y., Sasdelli, M., Angerhausen, D., Caldwell, D., … Smith, J. C. (2019). Rapid classification of TESS planet candidates with convolutional neural networks. Astronomy & Astrophysics. doi:10.1051/0004-6361/201935345

TRAPPIST-1 Habitable Atmosphere Intercomparison (THAI). Motivations and protocol

Fauchez, T., Turbet, M., Wolf, E. T., Boutle, I., Way, M. J., Del Genio, A. D., … Domagal Goldman, S. D. (2019). TRAPPIST-1 Habitable Atmosphere Intercomparison (THAI). Motivations and protocol. None. doi:10.5194/gmd-2019-166

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