How spacecraft measure position without GPS

Jack sits down with James, Flight Dynamics Engineer, and Loic, Principal Flight Science Engineer, to demystify orbital determination; or as Jack learns after claiming GPS expertise, to discover that "everything you just said was wrong." Between hot air balloon analogies, admissions of 1,000+ hours in Kerbal Space Program, and revelations about useless accelerometers, our team breaks down how AstroForge actually figures out where its spacecraft are in deep space and why that's harder than it sounds.