https://lifeboat.com/blog/2019/02/the-mars-gravitational-area-will-give-30-of-earths-gravity-to-our-guests-for-those-who-choose-not-to-travel-to-the-red-planet Safeguarding Humanity Fri, 15 Feb 2019 17:04:20 +0000 hourly 1 https://wordpress.org/?v=6.5.3