Journalist and author Fareed Zakaria hosts this in-depth look at the major global developments of the week (the title's "GPS" stands for "Global Public Square"), with an emphasis on new ideas and innovative solutions to the world's toughest problems. Each episode also features Zakaria leading a panel discussion and interviewing a major world figure.Fareed sits down with the renowned astrophysicist and author Neil deGrasse Tyson to discuss the science behind the billionaire race to space and contextualizes this moment in the history of human space exploration. Then, CNN's space and defense correspondent, Kristin Fisher, whose parents were both astronauts, explains the political dynamics between Richard Branson's Virgin Galactic and Jeff Bezos's Blue Origin and describes the history of these types of space flight tests. Plus, Rachel Crane, CNN's innovation and space correspondent, reports on all the details surrounding Virgin Galactic's test flight from the field at Spaceport America near Truth and Consequences, New Mexico. This is live coverage of today's test flight.