A Space Odyssey: Exploring the Universe with Gravitational-Wave Sirens

宇宙膨胀的速度有多快？该项目的目的是利用引力波对宇宙今天的膨胀率进行迄今为止最精确的测量，从而解决目前困扰现有测量的紧张局势。我们计划使用世界上最大的星系调查来开发最全面的引力波及其宿主目录，并使用创新的统计技术从它们中提取宇宙测量数据。预期的结果包括对宇宙是由什么组成以及它是如何演变的新知识，以及澳大利亚和其他调查成员国之间加强国际合作。预期的好处包括用于分析大数据的新软件和方法。

How fast is the Universe expanding? This project aims to produce the most precise measurement to date of the present day expansion rate of the Universe using gravitational waves and thus resolve current tensions plaguing existing measurements. We plan to develop the most comprehensive catalogue of gravitational waves and their hosts using the largest galaxy surveys in the world and use innovative statistical techniques to extract cosmological measurements from them. Expected outcomes include new knowledge of what the Universe is made of and how it has evolved, and enhanced international collaboration between Australia and other survey member countries. Anticipated benefits include new software and methods for the analysis of big data.