# Self-Sustaining Life in Space by Martin Rees > “Once the threshold is crossed when there is a self-sustaining level of life in space, then life’s long-range future will be secure irrespective of any of the risks on Earth, with the single exception of the catastrophic destruction of space itself.” > **— 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 poster preserves the complete claim and its explicit exception from the book's continuous passage. ## Related Articles and Collections - **Collection:** [[collections/MARS|MARS]] - **Collection:** [[collections/Machine Succession|Machine Succession]] - **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/Breakaway Space Habitat Infrastructure?|Breakaway Space Habitat Infrastructure?]] - **Wiki map:** [[wiki/Machine Civilization|Machine Civilization]] ## Related Topics - [[wiki/Space Survival|Space Survival]] - [[wiki/Civilizational Continuity Circuit|Civilizational Continuity Circuit]] ## Share on Social Media ``` “Once the threshold is crossed when there is a self-sustaining level of life in space, then life’s long-range future will be secure irrespective of any of the risks on Earth, with the single exception of the catastrophic destruction of space itself.” — Martin Rees, 2003, Our Final Hour https://bryantmcgill.com/simple-reminders-martin-rees-self-sustaining-life-space ```