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Jupiter’s icy moon Europa said to foster life in its oceans – NASA live transmission

Tibi PuiubyTibi Puiu
November 16, 2011 - Updated on June 11, 2023
in Alien life, Space
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The robot spacecraft Galileo captured this image mosaic during its mission orbiting Jupiter from 1995 - 2003. Evidence and images from the Galileo spacecraft, indicated that liquid oceans might exist below the icy surface. (c) Galileo Project, JPL, NASA
The robot spacecraft Galileo captured this image mosaic during its mission orbiting Jupiter from 1995 - 2003. Evidence and images from the Galileo spacecraft, indicated that liquid oceans might exist below the icy surface. (c) Galileo Project, JPL, NASA

Europa, the icy satellite of Jupiter, is covered in a thick crust of scarred and cross-hatched ice. Missions to Europa, which is comparable in size to Earth’s own moon, by NASA‘s Galileo spacecraft have brought back measurements which indicate the crust is tens of kilometers thick, however under it lies a warm ocean as far as 62 miles in depth (the deepest point of an ocean an Earth is 6.2 miles in the Pacific’s Mariana Trench). Scientists speculate that these oceans not only may support life, but foster!

Today, November 16th, NASA will host a Science Update at 10 a.m. PST (1 p.m. EST), in which new theories will be discussed publicly concerning Jupiter’s moon and supposed life. The event can been streamed live at NASA TV, or on Ustream with a moderated chat.

Europa is thought to have a hot, iron core and an ocean underneath its thick crust of ice on the surface. Measurements indicate that the ocean is in liquid form and is actually warm, heated by  the tidal stresses exerted on Europa by Jupiter and several other large moons, as well as by radioactivity.  The required substances and elements to harbor life are mixed and flowed through the ocean by the same powerful currents.

Jupiter’s Europa might not only sustain, but foster life, according to the research of  University of Arizona’s Richard Greenberg, a professor of planetary sciences and member of the Imaging Team for NASA’s Galileo Jupiter-orbiter spacecraft.

 “The real key to life on Europa,” Greenburg adds, “is the permeability of the ice crust. There is strong evidence that the ocean below the ice is connected to the surface through cracks and melting, at various times and places. As a result, the , if there is one, includes not just the liquid water ocean, but it extends through the ice up to the surface where there is access to oxidants, organic compounds, and light for photosynthesis. The physical setting provides a variety of potentially habitable and evolving niches. If there is life there, it would not necessarily be restricted to microorganisms.”

Today’s NASA Briefing participants are:

– Britney Schmidt, postdoctoral fellow, Institute for Geophysics, University of Texas at Austin
– Tori Hoehler, astrobiologist and senior research scientist, NASA’s Ames Research Center,
– Louise Prockter, planetary scientist, Johns Hopkins University Applied Physics Laboratory,
– Tom Wagner, program scientist, cryospheric sciences, Earth Science Division, NASA

via Daily Galaxy.

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Tags: EuropaGalileo spacecraftjupiterMoonnasa

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