Both Asteroid sprites act the same in the game, therefore they have the same code.
There are two options that we can do:
First, we can drag the code from one sprite to the other as shown in the picture.
Second, we can right-click the first Asteroid and click duplicate to create an exact copy of it. You would then have to remove the original second asteroid as it would have no code and would sit on the screen.
Let’s do the first option.