Planets by Average Distance from the Sun

About This Dataset

This chart shows the average distance of each planet in the Solar System from the Sun, measured in astronomical units (AU), where 1 AU equals the Earth-Sun distance of about 150 million kilometers. Distances range from Mercury at 0.39 AU to Neptune at 30.05 AU.

Analysis

The Solar System's scale is wildly uneven: the four rocky planets are packed within 1.52 AU of the Sun, while the four giants are spread across a span twenty times wider. Jupiter, the nearest giant, is already more than three times farther out than Mars. The jumps grow with each step - Saturn is nearly twice Jupiter's distance, Uranus doubles Saturn's, and Neptune sits at 30 AU, thirty times the Earth-Sun distance. This spacing explains why light reaches Earth in 8 minutes but takes over 4 hours to reach Neptune, and why the Voyager probes needed 12 years to fly there. The emptiness between the outer planets is the dominant feature of our planetary neighborhood.

Source: NASA Planetary Fact Sheet

Key Findings

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Neptune leads in Average Distance from the Sun (AU) with 30.05.

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Average Average Distance from the Sun (AU): 8.46 · median: 3.36.

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Gap: Neptune is 77.1× larger than Mercury.