标题： 引言：未来地球的可探测性 显示英文标题

标题： Introduction: Detectability of Future Earth

摘要： 地球未来的可探测性取决于未来几个世纪文明的发展轨迹。 人类文明也是唯一已知的高能耗文明的例子，因此我们的历史和未来轨迹为我们思考如何在外星寻找生命提供了基础。 本期《未来》杂志收录了从 astrobiological 视角考虑地球系统未来演化的贡献文章，旨在探讨人为影响在星际距离上可被探测到的程度。 这一系列文章强调了人类世未来发展的展开与搜寻地外文明之间的联系。 我们消耗能源的速度将决定我们高能耗社会对气候施加直接影响的程度，而这反过来可能限制我们文明的最终寿命。 如果费米悖论的答案是我们独自存在，那么我们的生存责任就更加重大，因为这意味着我们的文明代表了银河系（甚至整个宇宙）中唯一的智慧生命形式。 如果我们确实发现了遥远系外行星上的另一个文明证据，那么至少我们知道我们的发展轨迹是可以管理的。 但只要我们的搜寻仍一无所获，我们就必须保持警惕以确保我们的未来安全。 显示英文摘要

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.