https://lifeboat.com/blog/2016/02/photonic-laser-propulsion-to-send-a-100-kg-vehicle-to-mars-in-3-days-and-to-get-to-wafercraft-to-30-of-the-speed-of-light Safeguarding Humanity Sun, 04 Jun 2017 17:51:53 +0000 hourly 1 https://wordpress.org/?v=6.5.3