Quantum doesn't have to be tiny! Magdalena Zych talks about quantum "systems" on a cosmic scale.Magdalena is a theoretician who ponders questions that straddle quantum physics and relativity - which is a big deal because these two famous theories aren't quite compatible. Quantum systems make superbly precise clocks, and measuring time is a way to play with the bent space-time of relativity. This is a great game to stretch your brain! We are amazed by the ability of equations to describe the universe (although the detailed maths are left out of this conversation), and Magdalena recounts a fantastic adventure around the world to chat with colleagues. Have you ever wondered about a "quantum only-child" being simultaneously older and younger than themselves? Subscribe and share with your friends!