The TT&C is a critical function that ensures the spacecraft system operates properly, by sending Telecommand, receiving Telemetry, and doing tracking for the orbit determination. Although the TT&C engineering for LEO satellites is well consolidated, when it comes to the design of TT&C subsystems for low-latency and large networks there are several open research directions. This seminar will provide an overview of the main challenges that are faced when designing the TT&C for such kind of networks, taking as main reference Mega-constellations and IoT for the Earth Observation. The level of technical details will be provided in a style to help attendance to get familiar with the topic, thus making the seminar accessible also to engineers outside the specialty of TT&C. Speaker(s): Dr. Andrea Modenini, Dr. Gunes Karabulut Kurt Virtual: https://events.vtools.ieee.org/m/379150