论文标题
调查了银河宇宙射线诱导的辐射驱动的化学不平衡的生物学潜力
Investigating the biological potential of galactic cosmic ray-induced radiation-driven chemical disequilibrium in the Martian subsurface environment
论文作者
论文摘要
越来越多的证据表明，在古代火星上存在水性环境，提出了在这种环境中生命的可能性的问题。随后，随着火星大气的侵蚀导致其气候变化，地表水消失了，在地球上缩小了可居住的空间，只有有限的水在地表附近以盐水和水冰沉积的形式靠近。生活，如果存在，它将不得不适应恶劣的现代状况，其中包括低温和表面压力以及高辐射剂量。目前，没有证据表明地球表面上有任何生物活性，但是，尚未探索的地下环境较少苛刻，具有水冰和盐水形式的水痕，并经历了辐射驱动的氧化还原化学。我假设银河系宇宙射线（GCR）诱导的辐射驱动的化学不平衡可用于现有寿命，并使用在地球上类似的化学和辐射环境中看到的机制来代谢能量。我提出了一个由GCR引起的放射性区域，并讨论了与Exomars Mission的Rosalind Franklin Rover找到这种生活的前景。
There is growing evidence suggesting the presence of aqueous environment on ancient Mars, raising the question of the possibility of life in such an environment. Subsequently, with the erosion of the Martian atmosphere resulting in drastic changes in its climate, surface water disappeared, shrinking habitable spaces on the planet, with only a limited amount of water remaining near the surface in form of brines and water-ice deposits. Life, if it ever existed, would have had to adapt to harsh modern conditions, which includes low temperatures and surface pressure, and high radiation dose. Presently, there is no evidence of any biological activity on the planet's surface, however, the subsurface environment, which is yet to be explored, is less harsh, has traces of water in form of water-ice and brines, and undergoes radiation-driven redox chemistry. I hypothesize that Galactic Cosmic Ray (GCR)-induced radiation-driven chemical disequilibrium can be used for metabolic energy by extant life, and host organisms using mechanisms seen in similar chemical and radiation environments on Earth. I propose a GCR-induced radiolytic zone, and discuss the prospects of finding such life with Rosalind Franklin rover of the ExoMars mission.
