Astronomy
Jupiter's Gravity and Asteroid Belt Dynamics
Quick fact
If you look at the distribution of asteroid orbits, you'll find distinct gaps where almost no asteroids exist—these are called Kirkwood gaps, and they are directly caused by Jupiter's gravitational influence.
Why this is interesting
You might think the asteroid belt is a leftover debris field where everything orbits calmly. But hidden within it are empty lanes, like gaps in a highway, carved out by a giant planet's invisible hand.