Explainer: Can anyone just "bags" a planet?

Space it seems, is no longer the final frontier, in fact it's rapidly becoming an adventure holiday option for billionaires. As we saw with Space X's IPO launch, people are very interested in the idea of setting up a base on Mars and even what asteroid mining could look like. But how does that actually all work? In a place where the laws here on earth don't apply - is space just finders' keepers, first to plant the flag gets the land? To help answer those questions and more. Aotearoa's premier space law expert Anna Marie Brennan chats to Emile.