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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March 2018High Spectral Resolution SOFIA/EXES Observations of C2H2 toward Orion IRc2

Rangwala, N., Colgan, S. W. J., Gal, R. L., Acharyya, K., Huang, X., Lee, T. J., … McKelvey, M. (2018). High Spectral Resolution SOFIA/EXES Observations of C2H2 toward Orion IRc2. The Astrophysical Journal, 856(1), 9. doi:10.3847/1538-4357/aaab66

Bacillus safensis FO-36b and Bacillus pumilus SAFR-032: A Whole Genome Comparison of Two Spacecraft Assembly Facility Isolates

Tirumalai, M., Stepanov, V. G., Wunsche, A., Montazari, S., Gonzalez, R. O., Venkateswaran, K., & Fox, G. E. (2018). Bacillus safensis FO-36b and Bacillus pumilus SAFR-032: A Whole Genome Comparison of Two Spacecraft Assembly Facility Isolates . None. doi:10.1101/283937

Stable isotope probing of microbial iron reduction in Chocolate Pots hot spring, Yellowstone National Park

Fortney, N. W., He, S., Kulkarni, A., Friedrich, M. W., Holz, C., Boyd, E. S., & Roden, E. E. (2018). Stable isotope probing of microbial iron reduction in Chocolate Pots hot spring, Yellowstone National Park. Applied and Environmental Microbiology, None, AEM.02894–17. doi:10.1128/aem.02894-17

The Role of ε-Fe2O3 Nano-Mineral and Domains in Enhancing Magnetic Coercivity: Implications for the Natural Remanent Magnetization

Lee, S., & Xu, H. (2018). The Role of ε-Fe2O3 Nano-Mineral and Domains in Enhancing Magnetic Coercivity: Implications for the Natural Remanent Magnetization. Minerals, 8(3), 97. doi:10.3390/min8030097

Near Equilibrium 13 C18 O Bonding During Inorganic Calcite Precipitation Under Chemo-Stat Conditions

Levitt, N. P., Eiler, J. M., Romanek, C. S., Beard, B. L., Xu, H., & Johnson, C. M. (2018). Near Equilibrium 13 C18 O Bonding During Inorganic Calcite Precipitation Under Chemo-Stat Conditions. Geochemistry, Geophysics, Geosystems, 19(3), 901–920. doi:10.1002/2017gc007089

Energy Dissipation in the Upper Atmospheres of TRAPPIST-1 Planets

Cohen, O., Glocer, A., Garraffo, C., Drake, J. J., & Bell, J. M. (2018). Energy Dissipation in the Upper Atmospheres of TRAPPIST-1 Planets. The Astrophysical Journal, 856(1), L11. doi:10.3847/2041-8213/aab5b5

Variability of Disk Emission in Pre-main-sequence and Related Stars. IV. Investigating the Structural Changes in the Inner Disk Region of MWC 480

Fernandes, R. B., Long, Z. C., Pikhartova, M., Sitko, M. L., Grady, C. A., Russell, R. W., … Wisniewski, J. P. (2018). Variability of Disk Emission in Pre-main-sequence and Related Stars. IV. Investigating the Structural Changes in the Inner Disk Region of MWC 480. The Astrophysical Journal, 856(2), 103. doi:10.3847/1538-4357/aaaae7

A Universal Break in the Planet-to-star Mass-ratio Function of Kepler MKG Stars

Pascucci, I., Mulders, G. D., Gould, A., & Fernandes, R. (2018). A Universal Break in the Planet-to-star Mass-ratio Function of Kepler MKG Stars. The Astrophysical Journal, 856(2), L28. doi:10.3847/2041-8213/aab6ac

Cometary Dust

Levasseur-Regourd, A-C., Agarwal, J., Cottin, H., Engrand, C., Flynn, G., Fulle, M., … Westphal, A. (2018). Cometary Dust. Space Science Reviews, 214(3), None. doi:10.1007/s11214-018-0496-3

Crystal structure of CaSiO3 perovskite at 28–62 GPa and 300 K under quasi-hydrostatic stress conditions

Chen, H., Shim, S-H., Leinenweber, K., Prakapenka, V., Meng, Y., & Prescher, C. (2018). Crystal structure of CaSiO3 perovskite at 28–62 GPa and 300 K under quasi-hydrostatic stress conditions. American Mineralogist, 103(3), 462–468. doi:10.2138/am-2018-6087

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