I propose a version of the Drake equation to include searching for alien artifacts, which may be located on the Moon, Earth Trojans, and Earth co-orbital objects. The virtue of searching for artifacts is their lingering endurance in space, long after they go dead. I compare a search for extraterrestrial artifacts (SETA) strategy with the existing listening to stars search for extraterrestrial intelligence (SETI) strategy. I construct a ratio of a SETA Drake equation for artifacts to the conventional Drake equation so that most terms cancel out. This ratio is a good way to debate the efficacy of SETI versus SETA. The ratio is the product of two terms: one is the ratio of the length of time that probes from extraterrestrial (ET) civilizations could be present in the near-Earth region to the length of time that ET civilizations transmit signals to the Solar System. The second term is the ratio of the respective origin volumes: the volume from which probes can come, which is affected by the long-term passage of stars near the Sun, to the volume of transmitting civilizations. Scenarios are quantified that suggest that looking for alien artifacts near Earth is a credible alternative approach relative to listening to stars. This argues for emphasis on artifact searches, ET archeology. I suggest study of existing high-resolution images of the Moon, imaging of the Earth Trojans and Earth co-orbitals, and probe missions to the latter two. Close inspection in these near-Earth regions, which also may hold primordial remnants of the early Solar System, yields concrete astronomical research.

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外星人工制品的德雷克方程

我提出了德雷克方程的一个版本，包括寻找可能位于月球、地球特洛伊木马和地球共轨天体上的外星文物。寻找神器的优点是它们在太空中的持久耐力，在它们死后很久。我将搜索外星人工制品 (SETA) 策略与现有的聆听星星搜索外星智能 (SETI) 策略进行了比较。我构建了一个用于人工制品的 SETA 德雷克方程与传统德雷克方程的比率，以便大多数项相互抵消。这个比率是辩论 SETI 与 SETA 效力的好方法。该比率是两项的乘积：一是来自外星 (ET) 文明的探测器在近地地区可能存在的时间长度与 ET 文明向太阳系传输信号的时间长度的比率。第二项是各自起源体积的比值：受太阳附近恒星长期通过影响的探测器可以来自的体积与传播文明的体积之比。量化的情景表明，相对于聆听星星，寻找地球附近的外星文物是一种可靠的替代方法。这主张强调神器搜索，ET 考古学。我建议研究现有的月球高分辨率图像，地球特洛伊木马和地球共轨的成像，以及对后两者的探测任务。仔细检查这些近地区域，