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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April 2020The Impact of Planetary Rotation Rate on the Reflectance and Thermal Emission Spectrum of Terrestrial Exoplanets around Sunlike Stars

Guzewich, S. D., Lustig-Yaeger, J., Davis, C. E., Kopparapu, R. K., Way, M. J., & Meadows, V. S. (2020). The Impact of Planetary Rotation Rate on the Reflectance and Thermal Emission Spectrum of Terrestrial Exoplanets around Sunlike Stars. The Astrophysical Journal, 893(2), 140. doi:10.3847/1538-4357/ab83ec

GARNET: A COMPREHENSIVE, STANDARDIZED, GEOCHEMICAL DATABASE INCORPORATING LOCATIONS AND PARAGENESIS

Chiama, K., , ., Rutledge, R., Gabor, M., Lupini, I., Hazen, R. M., … Boujibar, A. (2020). GARNET: A COMPREHENSIVE, STANDARDIZED, GEOCHEMICAL DATABASE INCORPORATING LOCATIONS AND PARAGENESIS. Geological Society of America Abstracts with Programs. doi:10.1130/abs/2020se-344505

Incremental melting in the ureilite parent body: Initial composition, melting temperatures, and melt compositions

Collinet, M., & Grove, T. L. (2020). Incremental melting in the ureilite parent body: Initial composition, melting temperatures, and melt compositions. Meteoritics & Planetary Science. doi:10.1111/maps.13471

A Constructive Way to Think about Different Hydrothermal Environments for the Origins of Life

Omran, A., & Pasek, M. (2020). A Constructive Way to Think about Different Hydrothermal Environments for the Origins of Life. Life, 10(4), 36. doi:10.3390/life10040036

Constraining the radial drift of millimeter-sized grains in the protoplanetary disks in Lupus

Trapman, L., Ansdell, M., Hogerheijde, M. R., Facchini, S., Manara, C. F., Miotello, A., … Bruderer, S. (2020). Constraining the radial drift of millimeter-sized grains in the protoplanetary disks in Lupus. Astronomy & Astrophysics. doi:10.1051/0004-6361/201834537

Defining Lyfe in the Universe: From Three Privileged Functions to Four Pillars

Bartlett, S., & Wong, M. L. (2020). Defining Lyfe in the Universe: From Three Privileged Functions to Four Pillars. Life, 10(4), 42. doi:10.3390/life10040042

Direct Synthesis of Amides from Amines and Carboxylic Acids under Hydrothermal Conditions

Fu, X., Liao, Y., Glein, C. R., Jamison, M., Hayes, K., Zaporski, J., & Yang, Z. (2020). Direct Synthesis of Amides from Amines and Carboxylic Acids under Hydrothermal Conditions. ACS Earth and Space Chemistry, 4(5), 722–729. doi:10.1021/acsearthspacechem.0c00009

Trace Element Concentrations in Hydrothermal Silica Deposits as a Potential Biosignature

Gangidine, A., Havig, J. R., Fike, D. A., Jones, C., Hamilton, T. L., & Czaja, A. D. (2020). Trace Element Concentrations in Hydrothermal Silica Deposits as a Potential Biosignature. Astrobiology, 20(4), 525–536. doi:10.1089/ast.2018.1994

The Radiation Stability of Thymine in Solid H2O

Materese, C. K., Gerakines, P. A., & Hudson, R. L. (2020). The Radiation Stability of Thymine in Solid H2O. Astrobiology. doi:10.1089/ast.2019.2199

Retrograde-rotating Exoplanets Experience Obliquity Excitations in an Eccentricity-enabled Resonance

Kreyche, S. M., Barnes, J. W., Quarles, B. L., Lissauer, J. J., Chambers, J. E., & Hedman, M. M. (2020). Retrograde-rotating Exoplanets Experience Obliquity Excitations in an Eccentricity-enabled Resonance. The Planetary Science Journal, 1(1), 8. doi:10.3847/psj/ab8198

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