Does life beyond Earth exist? We do not have hard evidence for it, yet scientists admit that it is possible in certain locations within the Solar System<\/strong>. The best candidates, according to some researchers, are Mars, as well as Europa (a moon of Jupiter) and Enceladus (a moon of Saturn). You can find ice on each of these bodies. Mars holds it at its poles, while ice almost entirely composes the surfaces of Europa and Enceladus. Furthermore, the presence of ice implies the possibility of liquid water, and with it, life<\/strong>.<\/p>\n\n\n\n We are talking here not about extraterrestrial civilizations, but rather about simple, single-celled organisms<\/strong>. The existence of such beings is not yet confirmed, but this does not prevent researchers from considering how they might function. Sunlight presents one problem. Our planet sits in an ideal location in the system in this regard. However, Mars, Europa, and Enceladus lie significantly farther from the sta<\/strong>r. The Sun cannot provide the potential inhabitants of these bodies with enough light to survive. Nevertheless<\/strong>, it may not be the Sun at all that provides the conditions for extraterrestrial life to persist. Instead, cosmic radiation originating from outside our system does the job.<\/p>\n\n\n\n The Sun<\/a> provides not only light but also energy\u2014plants and many other organisms acquire it from rays through photosynthesis. However, biochemical reactions can also occur as a result of another type of radiation\u2014cosmic radiation. These are high-energy particles originating from outside our solar system, most likely from distant star explosions.<\/strong> Cosmic radiation primarily consists of protons, alpha particles, and electrons.<\/p>\n\n\n\n As it turns out, this type of radiation can serve as an energy source for microorganisms under the right conditions. The process of radiolysis, or the splitting of water molecules under the influence of rays, is key here.<\/strong> The electrons generated by this process can then be utilized by simple life forms as fuel for survival.<\/p>\n\n\n\n A team of researchers led by Dimitry Atri of New York University Abu Dhabi is investigating the issue. Their calculations<\/a> showed that cosmic radiation can support life on Mars, Europa, and Enceladus<\/strong>. Encenladus shows the greatest potential\u2014Saturn’s moon with a subsurface ocean and geysers that eject water through cracks in the icy crust. According to the calculations, this moon could support a biomass of 400-millionths of a gram per square centimeter. Although this sounds insignificant, we must remember that a single microbe weighs only a trillionth of a gram.<\/p>\n\n\n\nLife Beyond Earth: Mars, Europa, and Enceladus\u2014Top Candidates<\/h2>\n\n\n\n
Cosmic Radiation as an Energy Source<\/h3>\n\n\n\n