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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January 2019Absence of biomarker evidence for early eukaryotic life from the Mesoproterozoic Roper Group: Searching across a marine redox gradient in mid-Proterozoic habitability

Nguyen, K., Love, G. D., Zumberge, J. A., Kelly, A. E., Owens, J. D., Rohrssen, M. K., … Lyons, T. W. (2019). Absence of biomarker evidence for early eukaryotic life from the Mesoproterozoic Roper Group: Searching across a marine redox gradient in mid-Proterozoic habitability. Geobiology. doi:10.1111/gbi.12329

Instabilities in the Early Solar System Due to a Self-gravitating Disk

Quarles, B., & Kaib, N. (2019). Instabilities in the Early Solar System Due to a Self-gravitating Disk. The Astronomical Journal, 157(2), 67. doi:10.3847/1538-3881/aafa71

Contributions from Accreted Organics to Titan’s Atmosphere: New Insights from Cometary and Chondritic Data

Miller, K. E., Glein, C. R., & Hunter Waite, J. (2019). Contributions from Accreted Organics to Titan’s Atmosphere: New Insights from Cometary and Chondritic Data. The Astrophysical Journal, 871(1), 59. doi:10.3847/1538-4357/aaf561

ACCESS: Ground-based Optical Transmission Spectroscopy of the Hot Jupiter WASP-4b

Bixel, A., Rackham, B. V., Apai, D., Espinoza, N., López-Morales, M., Osip, D., … Weaver, I. (2019). ACCESS: Ground-based Optical Transmission Spectroscopy of the Hot Jupiter WASP-4b. The Astronomical Journal, 157(2), 68. doi:10.3847/1538-3881/aaf9a3

Experimental Constraints on Abiotic Formation of Tubules and Other Proposed Biological Structures in Subsurface Volcanic Glass

McCollom, T. M., & Donaldson, C. (2019). Experimental Constraints on Abiotic Formation of Tubules and Other Proposed Biological Structures in Subsurface Volcanic Glass. Astrobiology, 19(1), 53–63. doi:10.1089/ast.2017.1811

DECam survey for low-mass stars and substellar objects in the UCL and LCC subgroups of the Sco-Cen OB Association (SCOCENSUS)

Moolekamp, F. E., Mamajek, E. E., James, D. J., Luhman, K. L., Pecaut, M. J., Metchev, S. A., … Denbo, S. R. (2019). DECam survey for low-mass stars and substellar objects in the UCL and LCC subgroups of the Sco-Cen OB Association (SCOCENSUS). Monthly Notices of the Royal Astronomical Society, 484(4), 5049–5071. doi:10.1093/mnras/stz183

From Planetary Quarantine to Planetary Protection: A NASA and International Story

Rummel, J. D. (2019). From Planetary Quarantine to Planetary Protection: A NASA and International Story. Astrobiology. doi:10.1089/ast.2018.1944

Kinematic Links and the Coevolution of MHD Winds, Jets, and Inner Disks from a High-resolution Optical [${\rm{O}}\,{\rm{I}}$] Survey

Banzatti, A., Pascucci, I., Edwards, S., Fang, M., Gorti, U., & Flock, M. (2019). Kinematic Links and the Coevolution of MHD Winds, Jets, and Inner Disks from a High-resolution Optical [${\rm{O}}\,{\rm{I}}$] Survey. The Astrophysical Journal, 870(2), 76. doi:10.3847/1538-4357/aaf1aa

Discovery of δ Scuti Pulsations in the Young Hybrid Debris Disk Star HD 156623

Mellon, S. N., Mamajek, E. E., Zwintz, K., David, T. J., Stuik, R., J. Talens, G. J., … Crawford, S. M. (2019). Discovery of δ Scuti Pulsations in the Young Hybrid Debris Disk Star HD 156623. The Astrophysical Journal, 870(1), 36. doi:10.3847/1538-4357/aaf008

Sweep Jet Collection Laser-Induced Acoustic Desorption Atmospheric Pressure Photoionization for Lipid Analysis Applications

Benham, K., Fernández, F. M., & Orlando, T. M. (2019). Sweep Jet Collection Laser-Induced Acoustic Desorption Atmospheric Pressure Photoionization for Lipid Analysis Applications. Journal of The American Society for Mass Spectrometry. doi:10.1007/s13361-018-2118-4

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