This clip illustrates how fast the speed of light truly is and how it affects us. Neil deGrasse Tyson helps us visualize how light moves.

Luke, Ben, Han Solo, and Chewbacca escape the Imperial Forces using the Millennium Falcon. They're being chased by Imperial cruisers, which are gaining on them. Han decides that the only way to lose them is to make the jump to light speed and prepares the ship for the jump. Luke is panicked and tries to rush Han to make the jump, but Han explains that they need to make the right calculations or it could spell disaster.

Galileo explains to his student that, if two balls are dropped at the same height, they will both hit the ground at the same time, regardless of their weight.

Mr. Seaver begins teaching the class a lesson on gravity out of the textbook. He is especially confused by the book's claim that a coin and a feather will fall at exactly the same speed. After Luke challenges him to prove it, he tests the claim.

The students and Ms. Frizzle travel to Mercury, the first planet in our solar system, and learn that they weigh less because there is less gravity on the planet. They enjoy bouncing around with less gravity, and a few students take part in a contest to see who can jump higher.