Comments on: Grail satellite analysis indicates lava tubes on the moon could be up to 1000 to 5000 meters wide which would be ideal sites for massive moon colonies

Comments on: Grail satellite analysis indicates lava tubes on the moon could be up to 1000 to 5000 meters wide which would be ideal sites for massive moon colonies https://lifeboat.com/blog/2016/12/grail-satellite-analysis-indicates-lava-tubes-on-the-moon-could-be-up-to-1000-to-5000-meters-wide-which-would-be-ideal-sites-for-massive-moon-colonies Safeguarding Humanity Tue, 25 Apr 2017 02:11:45 +0000 hourly 1 https://wordpress.org/?v=6.6.2