When it comes to thinking about sustainability, most of us usually keep our feet on the ground. But as we extend our reach beyond this small rocky planet and out into the solar system, is it time to think about how we use space sustainably too?   Our guest today is Aaron Boley, Associate Professor of astronomy and astrophysics at The University of British Columbia and co-author of Who Owns Space?: International Law, Astrophysics and the Sustainable development of space.   With hundreds of thousands of satellites planned for launch in the next few years, Aaron is warning that our orbital space is getting too crowded and could be heading for a dangerous point of no return.   Is there still time for us to learn from our mistakes down at ground level and build a sustainable future among the stars? Learn more about your ad choices. Visit podcastchoices.com/adchoices