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 2017Transient deep-water oxygenation in the early Cambrian Nanhua Basin, South China

Cheng, M., Li, C., Zhou, L., Feng, L., Algeo, T. J., Zhang, F., … Jiang, S. (2017). Transient deep-water oxygenation in the early Cambrian Nanhua Basin, South China. Geochimica et Cosmochimica Acta, 210, 42–58. doi:10.1016/j.gca.2017.04.032

Late-stage magmatic outgassing from a volatile-depleted Moon

Day, J. M. D., Moynier, F., & Shearer, C. K. (2017). Late-stage magmatic outgassing from a volatile-depleted Moon. Proceedings of the National Academy of Sciences, 114(36), 9547–9551. doi:10.1073/pnas.1708236114

Sedimentary laminations in the Isheyevo (CH/CBb) carbonaceous chondrite formed by gentle impact-plume sweep-up

Garvie, L. A. J., Knauth, L. P., & Morris, M. A. (2017). Sedimentary laminations in the Isheyevo (CH/CBb) carbonaceous chondrite formed by gentle impact-plume sweep-up. Icarus, 292, 36–47. doi:10.1016/j.icarus.2017.03.021

Micrometer-scale magnetic imaging of geological samples using a quantum diamond microscope

Glenn, D. R., Fu, R. R., Kehayias, P., Le Sage, D., Lima, E. A., Weiss, B. P., & Walsworth, R. L. (2017). Micrometer-scale magnetic imaging of geological samples using a quantum diamond microscope. Geochemistry, Geophysics, Geosystems. doi:10.1002/2017gc006946

Comparative Genomic Analysis of Neutrophilic Iron(II) Oxidizer Genomes for Candidate Genes in Extracellular Electron Transfer

He, S., Barco, R. A., Emerson, D., & Roden, E. E. (2017). Comparative Genomic Analysis of Neutrophilic Iron(II) Oxidizer Genomes for Candidate Genes in Extracellular Electron Transfer. Frontiers in Microbiology, 8, None. doi:10.3389/fmicb.2017.01584

Comments on: Periodicity in the extinction rate and possible astronomical causes - comment on mass extinctions over the last 500 myr: an astronomical cause? (Erlykin et al .)

Melott, A. L., & Bambach, R. K. (2017). Comments on: Periodicity in the extinction rate and possible astronomical causes - comment on mass extinctions over the last 500 myr: an astronomical cause? (Erlykin et al .). Palaeontology. doi:10.1111/pala.12322

Exceptionally preserved fossil assemblages through geologic time and space

Muscente, A. D., Schiffbauer, J. D., Broce, J., Laflamme, M., O'Donnell, K., Boag, T. H., … Xiao, S. (2017). Exceptionally preserved fossil assemblages through geologic time and space. Gondwana Research, 48, 164–188. doi:10.1016/j.gr.2017.04.020

Origin and Evolution of Short-period Comets

Nesvorný, D., Vokrouhlický, D., Dones, L., Levison, H. F., Kaib, N., & Morbidelli, A. (2017). Origin and Evolution of Short-period Comets. The Astrophysical Journal, 845(1), 27. doi:10.3847/1538-4357/aa7cf6

Constraining the rate of oceanic deoxygenation leading up to a Cretaceous Oceanic Anoxic Event (OAE-2: ~94 Ma)

Ostrander, C. M., Owens, J. D., & Nielsen, S. G. (2017). Constraining the rate of oceanic deoxygenation leading up to a Cretaceous Oceanic Anoxic Event (OAE-2: ~94 Ma). Science Advances, 3(8), e1701020. doi:10.1126/sciadv.1701020

Raman spectral, elemental, crystallinity, and oxygen-isotope variations in conodont apatite during diagenesis

Zhang, L., Cao, L., Zhao, L., Algeo, T. J., Chen, Z-Q., Li, Z., … Wang, X. (2017). Raman spectral, elemental, crystallinity, and oxygen-isotope variations in conodont apatite during diagenesis. Geochimica et Cosmochimica Acta, 210, 184–207. doi:10.1016/j.gca.2017.04.036

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