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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October 2021Fossil records of early solar irradiation and cosmolocation of the CAI factory: A reappraisal

Bekaert, D. V., Auro, M., Shollenberger, Q. R., Liu, M-C., Marschall, H., Burton, K. W., … Nielsen, S. G. (2021). Fossil records of early solar irradiation and cosmolocation of the CAI factory: A reappraisal. Science Advances, 7(40), None. doi:10.1126/sciadv.abg8329

Microbial Communities in a Serpentinizing Aquifer Are Assembled through Strong Concurrent Dispersal Limitation and Selection

Putman, L. I., Sabuda, M. C., Brazelton, W. J., Kubo, M. D., Hoehler, T. M., McCollom, T. M., … Schrenk, M. O. (2021). Microbial Communities in a Serpentinizing Aquifer Are Assembled through Strong Concurrent Dispersal Limitation and Selection. mSystems, 6(5), None. doi:10.1128/msystems.00300-21

A GTP-synthesizing ribozyme selected by metabolic coupling to an RNA polymerase ribozyme

Akoopie, A., Arriola, J. T., Magde, D., & Müller, U. F. (2021). A GTP-synthesizing ribozyme selected by metabolic coupling to an RNA polymerase ribozyme. Science Advances, 7(41), None. doi:10.1126/sciadv.abj7487

Radiolytic Destruction of Uracil in Interstellar and Solar System Ices

Gerakines, P. A., Qasim, D., Frail, S., & Hudson, R. L. (2021). Radiolytic Destruction of Uracil in Interstellar and Solar System Ices. Astrobiology. doi:10.1089/ast.2021.0053

Perseverance rover reveals an ancient delta-lake system and flood deposits at Jezero crater, Mars

Mangold, N., Gupta, S., Gasnault, O., Dromart, G., Tarnas, J.D., Sholes, S.F., Horgan, B. Quantin-Nataf, C., Brown, A.J., Le Mouélic, S., Yingst, R.A., Bell, J.F., Beyssac, O., Bosak, T., Caleflii, F., Ehlmann, B.L., Farley, K.A., Grotzinger, J.P., Hickman-Lewis, K., Holm-Alwmark, S., Kah, L.C., Martinez-Frias, J., McLennan, S.M., Maurice, S., Nuñez, J.I., Ollila, A.M., Pilleri, P., Rice, Jr., J.W., Rice, M., Simon, J.I., Shuster, D.L., Stack, K.M., Sun, V.Z., Treiman, A.H., Weiss, B.P., Wiens, R.C., Williams, A.J., WIlliams, N.R., Williford, K.H. (2021) Perseverance rover reveals an ancient delta-lake system and flood deposits at Jezero crater, Mars. Science. doi: 10.1126/science.abl4051

Complete genome of the thermophilic purple sulfur Bacterium Thermochromatium tepidum compared to Allochromatium vinosum and other Chromatiaceae

Sattley, W. M., Swingley, W. D., Burchell, B. M., Dewey, E. D., Hayward, M. K., Renbarger, T. L., … Madigan, M. T. (2021). Complete genome of the thermophilic purple sulfur Bacterium Thermochromatium tepidum compared to Allochromatium vinosum and other Chromatiaceae. Photosynthesis Research. doi:10.1007/s11120-021-00870-y

A note on planet size and cooling rate

Seales, J., & Lenardic, A. (2021). A note on planet size and cooling rate. Icarus, 367, 114560. doi:10.1016/j.icarus.2021.114560

Calcium isotope cosmochemistry

Valdes, M. C., Bermingham, K. R., Huang, S., & Simon, J. I. (2021). Calcium isotope cosmochemistry. Chemical Geology, 581, 120396. doi:10.1016/j.chemgeo.2021.120396

September 2021Phosphine Generation Pathways on Rocky Planets

Omran, A., Oze, C., Jackson, B., Mehta, C., Barge, L. M., Bada, J., & Pasek, M. A. (2021). Phosphine Generation Pathways on Rocky Planets. Astrobiology. doi:10.1089/ast.2021.0034

Multiple Moist Climate Equilibrium States on Arid Rocky M-dwarf Planets: A Last-saturation Tracer Analysis

Ding, F., & Wordsworth, R. D. (2021). Multiple Moist Climate Equilibrium States on Arid Rocky M-dwarf Planets: A Last-saturation Tracer Analysis. The Planetary Science Journal, 2(5), 201. doi:10.3847/psj/ac2236

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