Everything they taught you in school was a lie! Or at least a few things were slightly misrepresented by illustrations in your science book. Michael Stevens, of Vsauce, covers 15 common inaccuracies of science in this week's episode of Mental Floss.
Collect all the stars in each level by hitting them with a ball of the same color. Use designated cannons to shoot the ball around, change its size and color, and overcome a variety of different obstacles.