Every broken rock scores points, and small rocks are harder to hit, so they are worth more: 20, 50 and 100. Another
lookup table, POINTS, gives the points for each size.
```js
const POINTS = [0, 100, 50, 20] // smaller asteroids are worth more
let score
score += POINTS[asteroid.size]
score = 0
```
What it means
POINTS[1] is 100, POINTS[3] is 20. score starts at 0 and breakAsteroid adds the rock's points.
Your turn
Under SIZES write POINTS; under let asteroids write let score.
At the top of breakAsteroid write the score += line.
At the bottom, above bullets = [], write score = 0.