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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October 2018A 2 R ⊕ Planet Orbiting the Bright Nearby K Dwarf Wolf 503

Peterson, M. S., Benneke, B., David, T. J., Dressing, C. D., Ciardi, D., Crossfield, I. J. M., … Isaacson, H. (2018). A 2 R ⊕ Planet Orbiting the Bright Nearby K Dwarf Wolf 503. The Astronomical Journal, 156(5), 188. doi:10.3847/1538-3881/aaddfe

Reassessing the origin and chronology of the unique achondrite Asuka 881394: Implications for distribution of 26Al in the early Solar System

Wimpenny, J., Sanborn, M. E., Koefoed, P., Cooke, I. R., Stirling, C., Amelin, Y., & Yin, Q-Z. (2018). Reassessing the origin and chronology of the unique achondrite Asuka 881394: Implications for distribution of 26Al in the early Solar System. Geochimica et Cosmochimica Acta. doi:10.1016/j.gca.2018.10.006

Origin of Earth's Water: Chondritic Inheritance Plus Nebular Ingassing and Storage of Hydrogen in the Core

Wu, J., Desch, S. J., Schaefer, L., Elkins-Tanton, L. T., Pahlevan, K., & Buseck, P. R. (2018). Origin of Earth's Water: Chondritic Inheritance Plus Nebular Ingassing and Storage of Hydrogen in the Core. Journal of Geophysical Research: Planets. doi:10.1029/2018je005698

Pervasive aerobic nitrogen cycling in the surface ocean across the Paleoproterozoic Era

Kipp, M. A., Stüeken, E. E., Yun, M., Bekker, A., & Buick, R. (2018). Pervasive aerobic nitrogen cycling in the surface ocean across the Paleoproterozoic Era. Earth and Planetary Science Letters, 500, 117–126. doi:10.1016/j.epsl.2018.08.007

Effects of core formation on the Hf–W isotopic composition of the Earth and dating of the Moon-forming impact

Fischer, R. A., & Nimmo, F. (2018). Effects of core formation on the Hf–W isotopic composition of the Earth and dating of the Moon-forming impact. Earth and Planetary Science Letters, 499, 257–265. doi:10.1016/j.epsl.2018.07.030

Exoplanet Modulation of Stellar Coronal Radio Emission

Cohen, O., Moschou, S-P., Glocer, A., Sokolov, I. V., Mazeh, T., Drake, J. J., … Alvarado-Gómez, J. D. (2018). Exoplanet Modulation of Stellar Coronal Radio Emission. The Astronomical Journal, 156(5), 202. doi:10.3847/1538-3881/aae1f2

ACCESS: a featureless optical transmission spectrum for WASP-19b from Magellan/IMACS

Espinoza, N., Rackham, B. V., Jordán, A., Apai, D., López-Morales, M., Osip, D. J., … Fraine, J. (2018). ACCESS: a featureless optical transmission spectrum for WASP-19b from Magellan/IMACS. Monthly Notices of the Royal Astronomical Society, 482(2), 2065–2087. doi:10.1093/mnras/sty2691

Volans-Carina: A New 90 Myr Old Stellar Association at 85 pc

Gagné, J., Faherty, J. K., & Mamajek, E. E. (2018). Volans-Carina: A New 90 Myr Old Stellar Association at 85 pc. The Astrophysical Journal, 865(2), 136. doi:10.3847/1538-4357/aadaed

Development of a Reflective Spatial Heterodyne Spectrometer (SHS) for Spaceflight Applications from the Extreme UV to Near IR

Harris, W., & Corliss, J. (2018). Development of a Reflective Spatial Heterodyne Spectrometer (SHS) for Spaceflight Applications from the Extreme UV to Near IR. Light, Energy and the Environment 2018 (E2, FTS, HISE, SOLAR, SSL). doi:10.1364/fts.2018.fm3b.3

A Bayesian Framework for Exoplanet Direct Detection and Non-detection

Ruffio, J-B., Mawet, D., Czekala, I., Macintosh, B., De Rosa, R. J., Ruane, G., … Nielsen, E. L. (2018). A Bayesian Framework for Exoplanet Direct Detection and Non-detection. The Astronomical Journal, 156(5), 196. doi:10.3847/1538-3881/aade95

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