探测到源自恩塞拉多斯海洋的酸盐
Frank Postberg1, Yasuhito Sekine2,3, Fabian Klenner4
1Institut für Geologische Wissenschaften, Freie Universität Berlin, Berlin, Germany. Frank.Postberg@fu-Berlin.de.
Nature
|June 14, 2023
概括
对于生命至关重要, 在恩塞拉多斯的海洋中通过冰粒被发现. 这一发现表明高酸盐度, 显著提高了这个海洋世界外星生命的潜力.
科学领域:
- 天体生物学
- 星球科学
- 地质化学
背景情况:
- 土星的一个冰的卫星安塞拉多,
- 之前的卡西尼任务分析发现了关键的海洋溶液和性pH值.
- 是生命的重要元素, 在地球以外的任何海洋中都没有被发现.
研究的目的:
- 为了确定恩赛拉多海洋中的存在和丰富性.
- 探讨恩塞拉多斯海洋的居住潜力.
主要方法:
- 使用卡西尼太空尘埃分析仪对安塞拉多的冰粒进行分析.
- 实验室模拟模拟恩塞拉多的海洋条件.
- 矿物溶解度和酸盐丰度的地化学建模.
主要成果:
- 在恩塞拉多的冰粒中检测到酸盐.
- 估计的度至少是地球海洋的100倍.
- 在恩塞拉多斯的海洋中展示了高酸盐丰富的机制.
结论:
- 可以很容易地在恩塞拉多斯的海洋中找到.
- 恩塞拉多的海洋条件支持高酸盐度,提高了可居住性的潜力.
- 在其他冰冷的海洋世界也可能存在类似的条件,增加了它们的天体生物学意义.
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