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 2017Comments 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

July 2017Deep UV Raman spectroscopy for planetary exploration: The search for in situ organics

Abbey, W. J., Bhartia, R., Beegle, L. W., DeFlores, L., Paez, V., Sijapati, K., … Reid, R. (2017). Deep UV Raman spectroscopy for planetary exploration: The search for in situ organics. Icarus, 290, 201–214. doi:10.1016/j.icarus.2017.01.039

Anoxic atmospheres on Mars driven by volcanism: Implications for past environments and life

Sholes, S. F., Smith, M. L., Claire, M. W., Zahnle, K. J., & Catling, D. C. (2017). Anoxic atmospheres on Mars driven by volcanism: Implications for past environments and life. Icarus, 290, 46–62. doi:10.1016/j.icarus.2017.02.022

Modeling climatic effects of carbon dioxide emissions from Deccan Traps volcanic eruptions around the Cretaceous–Paleogene boundary

Tobin, T. S., Bitz, C. M., & Archer, D. (2017). Modeling climatic effects of carbon dioxide emissions from Deccan Traps volcanic eruptions around the Cretaceous–Paleogene boundary. Palaeogeography, Palaeoclimatology, Palaeoecology, 478, 139–148. doi:10.1016/j.palaeo.2016.05.028

The dynamics of adaptive genetic diversity during the early stages of clonal evolution

Blundell, J. R., Schwartz, K., Francois, D., Fisher, D. S., Sherlock, G. J., & Levy, S. F. (2017). The dynamics of adaptive genetic diversity during the early stages of clonal evolution. None. doi:10.1101/170589

Environmental Adaptation from the Origin of Life to the Last Universal Common Ancestor

Cantine, M. D., & Fournier, G. P. (2017). Environmental Adaptation from the Origin of Life to the Last Universal Common Ancestor. Origins of Life and Evolution of Biospheres, 48(1), 35–54. doi:10.1007/s11084-017-9542-5

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