原住民技术物种
Prior Indigenous Technological Species
摘要：
天体生物学的一个主要的悬而未决的问题是，在太阳系的其他地方是否有现存或灭绝的生命。这项工作的大部分内容都暗示，我们正在寻找微生物，或者充其量是非智能生命，尽管技术人工制品可能更容易找到。SETI在太阳系搜寻外星人的工作通常假设这些外星人是来自太阳系外的，即使生命已经存在于太阳系，在地球上，在1970年。但是，如果一个先进的技术，也许是太空，物种曾经出现在太阳系，它可能已经产生了文物或其他技术签名，一直存活到今天，这意味着太阳系文物SETI提供了一个潜在的路径，以解决天体生物学的问题。在这里，我将讨论这种$prior$ $indigenous$ $technological$ $species$的起源和技术特征的可能位置，它可能出现在古代地球或其他天体上，如温室前的金星或潮湿的火星。在金星的情况下，全球温室效应的到来和可能的表面重塑可能已经消除了金星表面存在的所有证据。以地球为例，如果这个物种生活在盖尔之前，侵蚀作用以及最终的板块构造可能已经抹去了大部分这样的证据。剩下的土著技术特征可能非常古老，限制了它们可能仍然被发现的地方，在火星和月球表面之下，或者在外太阳系。
英文摘要：
One of the primary open questions of astrobiology is whether there is extant or extinct life elsewhere the Solar System. Implicit in much of this work is that we are looking for microbial or, at best, unintelligent life, even though technological artifacts might be much easier to find. SETI work on searches for alien artifacts in the Solar System typically presumes that such artifacts would be of extrasolar origin, even though life is known to have existed in the Solar System, on Earth, for eons. But if a prior technological, perhaps spacefaring, species ever arose in the Solar System, it might have produced artifacts or other technosignatures that have survived to present day, meaning Solar System artifact SETI provides a potential path to resolving astrobiology's question. Here, I discuss the origins and possible locations for technosignatures of such a $prior$ $indigenous$ $technological$ $species$, which might have arisen on ancient Earth or another body, such as a pre-greenhouse Venus or a wet Mars. In the case of Venus, the arrival of its global greenhouse and potential resurfacing might have erased all evidence of its existence on the Venusian surface. In the case of Earth, erosion and, ultimately, plate tectonics may have erased most such evidence if the species lived Gyr ago. Remaining indigenous technosignatures might be expected to be extremely old, limiting the places they might still be found to beneath the surfaces of Mars and the Moon, or in the outer Solar System.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
