Brad Eshbach loves space. Yes, I'm referring to the dark, airless, void that seems to swallow all. But more specifically, he admires the fearless explorers who routinely visit it and run experiments for the good of all mankind. In fact, Brad is so in love with those explorers that he created an app and website, "How Many People Are In Space Right Now?" Today, your intrepid hosts chat with Brad about his creation.