Know-it-all 101 🎓 ➡️ ~ Why Gravity Keeps Satellites in Orbit Instead of Pulling Them Down
Here’s something I know for no apparent reason: satellites don’t stay in space because they’ve escaped Earth’s pull. They actually stay up because Earth’s gravity never lets them go. Orbit is really just a clever way of falling forever. Imagine throwing a rock forward. If you toss it lightly, it lands a few meters away. If you hurl it harder, it goes much farther before hitting the ground. Now picture throwing it so fast that by the time gravity pulls it downward, the Earth has already curved away underneath it. Instead of crashing, it just keeps missing the ground. That’s an orbit, sideways motion so fast that falling never ends. Astronauts in the International Space Station aren’t floating because there’s no gravity up there. In fact, Earth’s pull at 400 kilometers above the surface is still about ninety percent as strong as it is where we stand. The reason they feel weightless is because both they and the station are falling together at the same rate, looping endlessly around t...