Challenges in building the quantum internet from space.

In recent years, the first experiments in demonstrating quantum communication technologies on board satellites, both large and small, have occurred. These experiments have shown that in principle, Quantum Key Distribution (QKD) using the satellites as a trusted-node for building a global quantum-safe communication system is possible. However, what if we do not want to use trusted-nodes? And what are the steps needed for a satellite-assisted quantum internet? In this talk, I will review the challenges and suggest some requirements to enable such a network to be built.