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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August 2020Thallium isotope ratios in shales from South China and northwestern Canada suggest widespread O2 accumulation in marine bottom waters was an uncommon occurrence during the Ediacaran Period

Ostrander, C. M., Owens, J. D., Nielsen, S. G., Lyons, T. W., Shu, Y., Chen, X., … Anbar, A. D. (2020). Thallium isotope ratios in shales from South China and northwestern Canada suggest widespread O2 accumulation in marine bottom waters was an uncommon occurrence during the Ediacaran Period. Chemical Geology, None, 119856. doi:10.1016/j.chemgeo.2020.119856

Constraining Ancient Magmatic Evolution on Mars Using Crystal Chemistry of Detrital Igneous Minerals in the Sedimentary Bradbury Group, Gale Crater, Mars

Payré, V., Siebach, K. L., Dasgupta, R., Udry, A., Rampe, E. B., & Morrison, S. M. (2020). Constraining Ancient Magmatic Evolution on Mars Using Crystal Chemistry of Detrital Igneous Minerals in the Sedimentary Bradbury Group, Gale Crater, Mars. Journal of Geophysical Research: Planets, 125(8), None. doi:10.1029/2020je006467

Iron phosphate in the Ediacaran Doushantuo Formation of South China: A previously undocumented marine phosphate sink

Schwid, M. F., Xiao, S., Hiatt, E. E., Fang, Y., & Nolan, M. R. (2020). Iron phosphate in the Ediacaran Doushantuo Formation of South China: A previously undocumented marine phosphate sink. Palaeogeography, Palaeoclimatology, Palaeoecology, None, 109993. doi:10.1016/j.palaeo.2020.109993

Probable benthic macroalgae from the Ediacara Member, South Australia

Xiao, S., Gehling, J. G., Evans, S. D., Hughes, I. V., & Droser, M. L. (2020). Probable benthic macroalgae from the Ediacara Member, South Australia. Precambrian Research, None, 105903. doi:10.1016/j.precamres.2020.105903

July 2020Seaweeds through time: Morphological and ecological analysis of Proterozoic and early Paleozoic benthic macroalgae

Bykova, N., LoDuca, S. T., Ye, Q., Marusin, V., Grazhdankin, D., & Xiao, S. (2020). Seaweeds through time: Morphological and ecological analysis of Proterozoic and early Paleozoic benthic macroalgae. Precambrian Research, None, 105875. doi:10.1016/j.precamres.2020.105875

Silicate-, Magnesium Ion-, and Urea-Induced Prebiotic Phosphorylation of Uridine via Pyrophosphate; Revisiting the Hot Drying Water Pool Scenario

Gull, M., Omran, A., Feng, T., & Pasek, M. A. (2020). Silicate-, Magnesium Ion-, and Urea-Induced Prebiotic Phosphorylation of Uridine via Pyrophosphate; Revisiting the Hot Drying Water Pool Scenario. Life, 10(8), 122. doi:10.3390/life10080122

Dynamical Packing in the Habitable Zone: The Case of Beta CVn

Kane, S. R., Turnbull, M. C., Fulton, B. J., Rosenthal, L. J., Howard, A. W., Isaacson, H., … Weiss, L. M. (2020). Dynamical Packing in the Habitable Zone: The Case of Beta CVn. The Astronomical Journal, 160(2), 81. doi:10.3847/1538-3881/ab9ffe

A Geologically Robust Procedure for Observing Rocky Exoplanets to Ensure that Detection of Atmospheric Oxygen Is a Modern Earth-like Biosignature

Lisse, C. M., Desch, S. J., Unterborn, C. T., Kane, S. R., Young, P. R., Hartnett, H. E., … Izenberg, N. R. (2020). A Geologically Robust Procedure for Observing Rocky Exoplanets to Ensure that Detection of Atmospheric Oxygen Is a Modern Earth-like Biosignature. The Astrophysical Journal, 898(1), L17. doi:10.3847/2041-8213/ab9b91

Meteorite evidence for partial differentiation and protracted accretion of planetesimals

Maurel, C., Bryson, J. F. J., Lyons, R. J., Ball, M. R., Chopdekar, R. V., Scholl, A., … Weiss, B. P. (2020). Meteorite evidence for partial differentiation and protracted accretion of planetesimals. Science Advances, 6(30), eaba1303. doi:10.1126/sciadv.aba1303

Comparison of multiple factors that impact the efficiency of non‐enzymatic DNA ligation: Key parameters for maximizing ligation rates and yields with carbodiimide activation

Obianyor, C., Newnam, G., Clifton, B., Grover, M., & Hud, N. V. (2020). Comparison of multiple factors that impact the efficiency of non‐enzymatic DNA ligation: Key parameters for maximizing ligation rates and yields with carbodiimide activation. ChemBioChem. doi:10.1002/cbic.202000335

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