导言：未来地球的可探测性
Introduction: Detectability of Future Earth
摘要：
地球未来的可探测性取决于我们文明在未来几个世纪的发展轨迹。人类文明也是唯一已知的能源密集型文明的例子，因此我们的历史和未来轨迹为思考如何在其他地方找到生命提供了基础。这期《未来》特刊的特色是从天体生物学的角度考虑地球系统未来的演变，目的是探索人类影响在星际距离上可以探测到的程度。这个系列强调了人类世的未来与寻找外星文明之间的联系。我们的能源消耗率将决定我们的能源密集型社会对气候产生直接影响的程度，而这反过来又可能限制我们文明的最终寿命。如果费米问题的答案是我们是孤独的，所以我们的文明代表了银河系（甚至宇宙）中唯一的智慧生命形式，那么我们生存的责任就更大了。如果我们确实在遥远的系外行星上找到了另一个文明的证据，那么至少我们会知道我们的轨迹是可以控制的。但只要我们的搜索结果是空的，我们就必须保持警惕，以确保我们的未来安全。
英文摘要：
Earth's future detectability depends upon the trajectory of our civilization over the coming centuries. Human civilization is also the only known example of an energy-intensive civilization, so our history and future trajectories provide the basis for thinking about how to find life elsewhere. This special issue of Futures features contributions that consider the future evolution of the Earth system from an astrobiological perspective, with the goal of exploring the extent to which anthropogenic influence could be detectable across interstellar distances. This collection emphasizes the connection between the unfolding future of the Anthropocene with the search for extraterrestrial civilizations. Our rate of energy consumption will characterize the extent to which our energy-intensive society exerts direct influence on climate, which in turn may limit the ultimate lifetime of our civilization. If the answer to Fermi's question is that we are alone, so that our civilization represents the only form of intelligent life in the galaxy (or even the universe), then our responsibility to survive is even greater. If we do find evidence of another civilization on a distant exoplanet, then at least we will know that our trajectory can be managed. But as long as our searches turn up empty, we must stay vigilant to keep our future secure.
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。
