Science, Space and Technology News 2023
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Beneath a crust of solid water ice, Jupiter’s moon Europa is thought to have a subsurface ocean of salty liquid water. Because of this, Europa is a prime target in the search for life elsewhere in the Solar System. Assessing this deep ocean’s potential habitability depends on its chemistry, including the abundance of biologically essential elements like carbon.
In two separate studies, researchers analyze near-infrared spectroscopy of CO2 on Europa’s surface, obtained with JWST.is located in Tara Regio – a ~1,800 square kilometer region dominated by “chaos terrain,” geologically disrupted resurfaced materials.identified within this recently resurfaced region – some of the youngest terrain on Europa’s surface – indicates that it was derived from an internal source of carbon.
This graphic shows a map of Europa’s surface with NIRCam on NASA’s James Webb Space Telescope in the first panel and compositional maps derived from Webb’s NIRSpec/IFU data in the following three panels. In the compositional maps, the white pixels correspond to carbon dioxide in the large-scale region of disrupted chaos terrain known as Tara Regio , with additional concentrations within portions of the chaos region Powys Regio .
They argue that plume activity on Europa could be infrequent, or sometimes does not contain the volatile gasses they included in their search. The results in both studies complement each other and reinforce the conclusion that Europa’s subsurface ocean contains abundant carbon.ice mixture on the surface of Europa and no detection of plume activity” by G. L. Villanueva, H. B. Hammel, S. N. Milam, S. Faggi, V. Kofman, L. Roth, K. P. Hand, L. Paganini, J. Stansberry, J. Spencer, S. Protopapa, G.
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