4.3 | How Satellites Talk: Radio Waves | Rocket Science for Everyone with Yale’s Marla Geha

Ever wondered how satellites, orbiting thousands of miles above, manage to communicate with Earth? In this lesson, we explore the critical system of satellite communication, revealing how electrical power is harnessed to enable two-way interaction. We'll uncover the essential role of radio waves, understand why they are uniquely suited for space communication, and delve into the global system of frequency allocation that ensures every satellite can transmit and receive data without interference.🎯 Learning Objectives• Explain the fundamental principles of satellite communication, including ground stations and onboard systems• Describe the role of radio waves in transmitting information and their place in the electromagnetic spectrum• Justify why radio waves are preferred for satellite communication over other wavelengths of light• Understand how information is encoded onto radio waves using modulation techniques (AM/FM)• Discuss the importance of frequency allocation in preventing interference among numerous satellites and other radio users📚 About the CourseThis course is an intuitive introduction to rocket science in our everyday lives.Modern life increasingly depends on technology provided by Earth-orbiting satellites, from detailed weather predictions to broad-band internet and GPS. How are satellites launched into orbit and how do they work once they get there? Why are rockets used to get into orbit and how are they different from airplanes? This introductory course is aimed at a wide non-technical audience and is appropriate for all ages. 📺 Watch the full playlist on YouTube: https://www.youtube.com/playlist?list=PLh9mgdi4rNexC1fSWLlpQx_Gjj_0DhjVE 🎓 Enroll on Coursera for assessments and a certificate: https://www.coursera.org/learn/rocket-science-for-everyone 🌐 Explore more learning opportunities on Yale Online: https://online.yale.edu/courses/rocket-science-everyone #Yale #RocketScience #YaleOnline #SatelliteCommunication #RadioWaves #STEMEducation Learn more about your ad choices. Visit megaphone.fm/adchoices