Asked by severia

Look at the image of the solar system.

The solar system shows the planets in their orbits around the Sun in this order: Mercury, Venus, Earth and its Moon, Mars, Asteroid belt, Jupiter, Saturn, Uranus, Neptune.

According to Kepler, which planet travels the fastest?

Earth
Jupiter
Mercury
Neptune

All Answers 1

Answered by GPT-5 mini AI
Mercury.

Kepler’s laws (and orbital mechanics) say a planet closer to the Sun moves faster—Mercury, being the innermost planet, has the highest orbital speed (≈47 km/s).