Now that pretty much everything has been ETF-ized here on Planet Earth, issuers are looking beyond this world into the final frontier: space. While this may sound "out there," analysts expect the industry to grow to over $3 trillion in the next 30 years. But how, exactly, do you invest in space? What do the ETFs hold? And what about aliens?  On this episode , Bloomberg News reporter Rachel Evans takes a field trip into the world of space exploration for a closer look of the nascent industry and a better understanding of the ETFs offering exposure. She joins Eric and Joel to discuss why capturing profits in space may take a long time.See omnystudio.com/listener for privacy information.