Sir Isaac Newton ponders why the planets orbit the sun and what allows them to maintain that orbit. Very soon after he sits down under an apple tree, Humphrey bangs his head against one of the limbs, causing an apple to fall on Newton's head. It is at this moment that Isaac Newton has an epiphany and starts to develop the concept of gravity.

The kids learn how the rainbows works in detail.

Beakman explains why we keep our balance on a bike using a gyroscope. He then explains how a gyroscope works and performs a few demos to prove this.

Peter jumps up in excitement after hearing that he can keep the company plane. He defies the laws of gravity by staying in the air after his jump.

The crew is trying to reach the shuttle that already landed on the asteroid. While traveling to it, the crew members come across a giant ravine in the asteroid and have no way to cross it. Since there is less gravity on the asteroid, they try to jump over the ravine. They successfully jump over it, and their trajectory leads them away from the asteroid, but they manage to turn the engines back on in time to return to the asteroid.