NASA Astrobiology

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A volcanically active planet is shown in closeup at the left side of the image with glowing eruptions and lines of lava on the surface. To the right and in the distance is a faint blue glowing ball representing the more massive planet in the system.

Sixteen frames from Voyager 1's flyby of Jupiter in 1979 were merged to create this image. Jupiter's Great Red Spot is visible in the center. Jupiter's moon Europa can be seen in the foreground at the bottom left of the image.

The frame is a horizontal rainbow of color on a grid. Shadows of molecules can be seen through the light as well as the jagged peaks and troughs of spectral lines.

Fizzy Super Earths and Lava Worlds“Fizzy Super-Earths: Impacts of Magma Composition on the Bulk Density and Structure of Lava Worlds.” in The Astrophysical Journal.01/03

Identifying Hydrothermal Activity on Icy Ocean Worlds“Ethene-ethanol ratios as potential indicators of hydrothermal activity at Enceladus, Europa, and other icy ocean worlds.” In Icarus.02/03

NASA Raman Spectroscopic Database"The NASA Raman spectroscopic database: Ramdb version 1.00.” In Icarus.03/03

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May 2018Atmospheric Seasonality as an Exoplanet Biosignature

Olson, S. L., Schwieterman, E. W., Reinhard, C. T., Ridgwell, A., Kane, S. R., Meadows, V. S., & Lyons, T. W. (2018). Atmospheric Seasonality as an Exoplanet Biosignature. The Astrophysical Journal, 858(2), L14. doi:10.3847/2041-8213/aac171

Caveats to Exogenous Organic Delivery from Ablation, Dilution, and Thermal Degradation

Mehta, C., Perez, A., Thompson, G., & Pasek, M. (2018). Caveats to Exogenous Organic Delivery from Ablation, Dilution, and Thermal Degradation. Life, 8(2), 13. doi:10.3390/life8020013

Linking the rise of atmospheric oxygen to growth in the continental phosphorus inventory

Cox, G. M., Lyons, T. W., Mitchell, R. N., Hasterok, D., & Gard, M. (2018). Linking the rise of atmospheric oxygen to growth in the continental phosphorus inventory. Earth and Planetary Science Letters, 489, 28–36. doi:10.1016/j.epsl.2018.02.016

Examination of the Long-Term Subsurface Warming Observed at the Apollo 15 and 17 Sites Utilizing the Newly Restored Heat Flow Experiment Data From 1975 to 1977

Nagihara, S., Kiefer, W. S., Taylor, P. T., Williams, D. R., & Nakamura, Y. (2018). Examination of the Long-Term Subsurface Warming Observed at the Apollo 15 and 17 Sites Utilizing the Newly Restored Heat Flow Experiment Data From 1975 to 1977. Journal of Geophysical Research: Planets, 123(5), 1125–1139. doi:10.1029/2018je005579

ALMA Survey of Lupus Protoplanetary Disks. II. Gas Disk Radii

Ansdell, M., Williams, J. P., Trapman, L., Terwisga, S. E. v., Facchini, S., Manara, C. F., … Van Dishoeck, E. F. (2018). ALMA Survey of Lupus Protoplanetary Disks. II. Gas Disk Radii. The Astrophysical Journal, 859(1), 21. doi:10.3847/1538-4357/aab890

GPI Spectra of HR 8799 c, d, and e from 1.5 to 2.4 μm with KLIP Forward Modeling

Greenbaum, A. Z., Pueyo, L., Ruffio, J-B., Wang, J. J., Rosa, R. J. D., Aguilar, J., … Wolff, S. (2018). GPI Spectra of HR 8799 c, d, and e from 1.5 to 2.4 μm with KLIP Forward Modeling. The Astronomical Journal, 155(6), 226. doi:10.3847/1538-3881/aabcb8

Three Small Planets Transiting the Bright Young Field Star K2-233

David, T. J., Crossfield, I. J. M., Benneke, B., Petigura, E. A., Gonzales, E. J., Schlieder, J. E., … Ende, M. (2018). Three Small Planets Transiting the Bright Young Field Star K2-233. The Astronomical Journal, 155(5), 222. doi:10.3847/1538-3881/aabde8

Ediacara biota flourished in oligotrophic and bacterially dominated marine environments across Baltica

Pehr, K., Love, G. D., Kuznetsov, A., Podkovyrov, V., Junium, C. K., Shumlyanskyy, L., … Bekker, A. (2018). Ediacara biota flourished in oligotrophic and bacterially dominated marine environments across Baltica. Nature Communications, 9(1), None. doi:10.1038/s41467-018-04195-8

Towards a mechanistic and physiological understanding of a ferredoxin disulfide reductase from the domainsArchaeaandBacteria

Prakash, D., Walters, K. A., Martinie, R. J., McCarver, A. C., Kumar, A. K., Lessner, D. J., … Ferry, J. G. (2018). Towards a mechanistic and physiological understanding of a ferredoxin disulfide reductase from the domainsArchaeaandBacteria. Journal of Biological Chemistry, None, jbc.RA118.002473. doi:10.1074/jbc.ra118.002473

Experimental Evolution as a High-Throughput Screen for Genetic Adaptations

Cooper, V. S. (2018). Experimental Evolution as a High-Throughput Screen for Genetic Adaptations. mSphere, 3(3), e00121–18. doi:10.1128/msphere.00121-18

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