Table 3-3:
Comparison of Ancient and Modern Astronomical Measurements
Ancient (km)
Modern (km)
Earth’s diameter
13,000
12,756
Moon’s diameter
4,300
3,476
Sun’s diameter
9 × 10
4
1.39 × 10
6
Earth-Moon distance
4 × 10
5
3.84 × 10
5
Earth-Sun distance
10
7
1.50 × 10
8