https://lifeboat.com/blog/2017/09/audacious-team-publishes-comprehensive-plan-to-reach-alpha-centauri-using-laser-powered-femto-spacecraft-in-50-years Safeguarding Humanity Fri, 15 Sep 2017 00:01:02 +0000 hourly 1 https://wordpress.org/?v=6.6.2