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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December 2021EXPRES. III. Revealing the Stellar Activity Radial Velocity Signature of ϵ Eridani with Photometry and Interferometry

Roettenbacher, R. M., Cabot, S. H. C., Fischer, D. A., Monnier, J. D., Henry, G. W., Harmon, R. O., … Levine, S. (2021). EXPRES. III. Revealing the Stellar Activity Radial Velocity Signature of ϵ Eridani with Photometry and Interferometry. The Astronomical Journal, 163(1), 19. doi:10.3847/1538-3881/ac3235

Elioraea tepida, sp. nov., a Moderately Thermophilic Aerobic Anoxygenic Phototrophic Bacterium Isolated from the Mat Community of an Alkaline Siliceous Hot Spring in Yellowstone National Park, WY, USA

Saini, M. K., Yoshida, S., Sebastian, A., Hara, E., Tamaki, H., Soulier, N. T., … Bryant, D. A. (2021). Elioraea tepida, sp. nov., a Moderately Thermophilic Aerobic Anoxygenic Phototrophic Bacterium Isolated from the Mat Community of an Alkaline Siliceous Hot Spring in Yellowstone National Park, WY, USA. Microorganisms, 10(1), 80. doi:10.3390/microorganisms10010080

New Perspectives on the Exoplanet Radius Gap from a Mathematica Tool and Visualized Water Equation of State

Zeng, L., Jacobsen, S. B., Hyung, E., Levi, A., Nava, C., Kirk, J., … Latham, D. W. (2021). New Perspectives on the Exoplanet Radius Gap from a Mathematica Tool and Visualized Water Equation of State. The Astrophysical Journal, 923(2), 247. doi:10.3847/1538-4357/ac3137

November 2021Long-read sequencing reveals increased occurrence of genomic variants and adenosine methylation in Bacillus pumilus SAFR-032 after long-duration flight exposure onboard the International Space Station

Waters, S. M., Ledford, S. M., Wacker, A., Verma, S., Serda, B., McKaig, J., … Smith, D. J. (2021). Long-read sequencing reveals increased occurrence of genomic variants and adenosine methylation in Bacillus pumilus SAFR-032 after long-duration flight exposure onboard the International Space Station. International Journal of Astrobiology, None, 1–10. doi:10.1017/s1473550421000343

The ‘breaking the chains’ migration model for super-Earth formation: the effect of collisional fragmentation

Esteves, L., Izidoro, A., Bitsch, B., Jacobson, S. A., Raymond, S. N., Deienno, R., & Winter, O. C. (2021). The ‘breaking the chains’ migration model for super-Earth formation: the effect of collisional fragmentation. Monthly Notices of the Royal Astronomical Society, 509(2), 2856–2868. doi:10.1093/mnras/stab3203

Organic molecules revealed in Mars’s Bagnold Dunes by Curiosity’s derivatization experiment

Millan, M., Teinturier, S., Malespin, C. A., Bonnet, J. Y., Buch, A., Dworkin, J. P., … Mahaffy, P. R. (2021). Organic molecules revealed in Mars’s Bagnold Dunes by Curiosity’s derivatization experiment. Nature Astronomy, 6(1), 129–140. doi:10.1038/s41550-021-01507-9

An upper limit on late accretion and water delivery in the TRAPPIST-1 exoplanet system

Raymond, S. N., Izidoro, A., Bolmont, E., Dorn, C., Selsis, F., Turbet, M., … Grimm, S. L. (2021). An upper limit on late accretion and water delivery in the TRAPPIST-1 exoplanet system. Nature Astronomy, 6(1), 80–88. doi:10.1038/s41550-021-01518-6

October 2021Why Do M Dwarfs Have More Transiting Planets?

Mulders, G. D., Drążkowska, J., Van Der Marel, N., Ciesla, F. J., & Pascucci, I. (2021). Why Do M Dwarfs Have More Transiting Planets? The Astrophysical Journal Letters, 920(1), L1. doi:10.3847/2041-8213/ac2947

Fossil records of early solar irradiation and cosmolocation of the CAI factory: A reappraisal

Bekaert, D. V., Auro, M., Shollenberger, Q. R., Liu, M-C., Marschall, H., Burton, K. W., … Nielsen, S. G. (2021). Fossil records of early solar irradiation and cosmolocation of the CAI factory: A reappraisal. Science Advances, 7(40), None. doi:10.1126/sciadv.abg8329

A GTP-synthesizing ribozyme selected by metabolic coupling to an RNA polymerase ribozyme

Akoopie, A., Arriola, J. T., Magde, D., & Müller, U. F. (2021). A GTP-synthesizing ribozyme selected by metabolic coupling to an RNA polymerase ribozyme. Science Advances, 7(41), None. doi:10.1126/sciadv.abj7487

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