# A Defining Moment for the Cosmos by Martin Rees > “We live at what could be a defining moment for the cosmos, not just for our Earth.” > **— Martin Rees**, *2003, Our Final Hour* ## Sources and Context - **Direct source and editorial record:** [2003, Our Final Hour](https://files.cercomp.ufg.br/weby/up/410/o/Our_Final_Hour_%E2%80%93_A_Scientist%27s_Warning_._2003_._Martin_Rees_c%C3%B3pia.pdf) — The book's continuous space-survival passage contains this exact concluding sentence. ## Related Articles and Collections - **Collection:** [[collections/Machine Succession|Machine Succession]] - **Collection:** [[collections/MARS|MARS]] - **Article:** [[articles/We Were Never Going to Make It|We Were Never Going to Make It]] - **Article:** [[articles/The Last Migration Will Not Be Human|The Last Migration Will Not Be Human]] - **Article:** [[articles/Christopher Nolan's Odyssey at the Threshold of Machine Succession|Christopher Nolan's Odyssey at the Threshold of Machine Succession]] - **Wiki map:** [[wiki/Machine Succession|Machine Succession]] ## Related Topics - [[wiki/Civilizational Handoff|Civilizational Handoff]] - [[wiki/Cosmic Future|Cosmic Future]] ## Share on Social Media ``` “We live at what could be a defining moment for the cosmos, not just for our Earth.” — Martin Rees, 2003, Our Final Hour https://bryantmcgill.com/simple-reminders-martin-rees-defining-moment-cosmos ```