Final answer:
The distances between the terrestrial planets are relatively smaller compared to the distances between the gas giants.
Step-by-step explanation:
The distances between the terrestrial planets, which are the rocky planets closer to the Sun, are relatively smaller compared to the distances between the gas giants, which are the outer planets composed mostly of gas. The terrestrial planets, including Mercury, Venus, Earth, and Mars, are much closer to each other and closer to the Sun compared to the gas giants, which include Jupiter, Saturn, Uranus, and Neptune. For example, the distance between Earth and Mars ranges from 0.4 to 2.7 times the Earth-Sun distance, while Jupiter is about 5 times farther from the Sun than Earth.