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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July 2018Subsurface processes influence oxidant availability and chemoautotrophic hydrogen metabolism in Yellowstone hot springs

Lindsay, M. R., Amenabar, M. J., Fecteau, K. M., Debes, R. V., Fernandes Martins, M. C., Fristad, K. E., … Boyd, E. S. (2018). Subsurface processes influence oxidant availability and chemoautotrophic hydrogen metabolism in Yellowstone hot springs. Geobiology. doi:10.1111/gbi.12308

Upgrading the Gemini planet imager: GPI 2.0

Chilcote, J. K., Macintosh, B., Norton, A., Savransky, D., Nielsen, E., Millar-Blanchaer, M. A., … Bailey, V. P. (2018). Upgrading the Gemini planet imager: GPI 2.0. Ground-based and Airborne Instrumentation for Astronomy VII. doi:10.1117/12.2313771

Dynamic oxygen and coupled biological and ecological innovation during the second wave of the Ediacara Biota

Evans, S. D., Diamond, C. W., Droser, M. L., & Lyons, T. W. (2018). Dynamic oxygen and coupled biological and ecological innovation during the second wave of the Ediacara Biota. Emerging Topics in Life Sciences, None, ETLS20170148. doi:10.1042/etls20170148

A WISE Survey of Circumstellar Disks in the Upper Scorpius Association

Esplin, T. L., Luhman, K. L., Miller, E. B., & Mamajek, E. E. (2018). A WISE Survey of Circumstellar Disks in the Upper Scorpius Association. The Astronomical Journal, 156(2), 75. doi:10.3847/1538-3881/aacce0

The Impact of Stellar Distances on Habitable Zone Planets

Kane, S. R. (2018). The Impact of Stellar Distances on Habitable Zone Planets. The Astrophysical Journal, 861(2), L21. doi:10.3847/2041-8213/aad094

New Young Stars and Brown Dwarfs in the Upper Scorpius Association

Luhman, K. L., Herrmann, K. A., Mamajek, E. E., Esplin, T. L., & Pecaut, M. J. (2018). New Young Stars and Brown Dwarfs in the Upper Scorpius Association. The Astronomical Journal, 156(2), 76. doi:10.3847/1538-3881/aacc6d

First evidence for silica condensation within the solar protoplanetary disk

Komatsu, M., Fagan, T. J., Krot, A. N., Nagashima, K., Petaev, M. I., Kimura, M., & Yamaguchi, A. (2018). First evidence for silica condensation within the solar protoplanetary disk. Proceedings of the National Academy of Sciences, None, 201722265. doi:10.1073/pnas.1722265115

The soluble organic compounds of the Mukundpura meteorite: A new CM chondrite fall

Pizzarello, S., & Yarnes, C. T. (2018). The soluble organic compounds of the Mukundpura meteorite: A new CM chondrite fall. Planetary and Space Science. doi:10.1016/j.pss.2018.07.002

Forward contamination of ocean worlds: A stakeholder conversation

Sherwood, B., Ponce, A., & Waltemathe, M. (2018). Forward contamination of ocean worlds: A stakeholder conversation. Space Policy. doi:10.1016/j.spacepol.2018.06.005

Transient surface ocean oxygenation recorded in the ∼2.66-Ga Jeerinah Formation, Australia

Koehler, M. C., Buick, R., Kipp, M. A., Stüeken, E. E., & Zaloumis, J. (2018). Transient surface ocean oxygenation recorded in the ∼2.66-Ga Jeerinah Formation, Australia. Proceedings of the National Academy of Sciences, 115(30), 7711–7716. doi:10.1073/pnas.1720820115

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