what is the light element found mostly in the outer planets
Outer Planets. The next four planets out from the sun are Jupiter, Saturn, Uranus, and Neptune. They are collectively referred to as the Jovian planets (means Jupiter like). They are significantly different from the terrestrial planets. Besides being farther from the sun, the Jovian planets are much larger, are more gaseous, have lower densities, and all have some sort of rings. Their large sizes are responsible for increased gravity which can hold onto lighter elements like gases.