Everything Everywhere Daily: History, Science, Geography & More How Do Satellites Work?
Aug 4, 2021
Explore how satellites orbit Earth, transmitting signals and helping us navigate daily life. Discover the rocket dynamics and orbital mechanics needed for successful space travel, using relatable analogies like cannonballs. Learn about the complex paths of space probes and the challenges of launching materials into the sun. Uncover the significance of different satellite orbits, including geosynchronous and polar, and their vital role in communication and future space missions.
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Orbit Requires Velocity, Not Altitude
- Getting into orbit requires high lateral velocity, not just altitude.
- A rocket that goes straight up to space will fall back to Earth without orbiting.
Newton's Cannonball Orbit Insight
- Newton envisioned orbit as firing a projectile fast enough it never lands.
- Orbiting objects are essentially "falling around" Earth due to gravity and velocity balance.
Objects Thrown In Orbit Change Path
- Throwing an object from space towards Earth puts it in a different orbit, not straight to Earth.
- The new orbit is elliptical with varying closest and farthest points from Earth.