SpaceX CEO Elon Musk is set to deliver a keynote address at the 67th annual International Astronautical Congress tomorrow, where he’ll outline his plan for interplanetary colonization beginning with Mars. As a bit of a teaser, Musk posted a couple of images from the inaugural firing of the Raptor interplanetary engine, which is designed for…

über SpaceX fires its Raptor engine for Mars flights for the first time — TechCrunch