1 pixel = ~1,000 km; planet sizes are approx. to scale     back
The Sun - 1,400,000 km in diameter
Mercury - Mercury - 58,000,000 km from the Sun
Venus - Venus - 108,000,000 km from the Sun
Earth - Earth - 150,000,000 km from the Sun
Mars - Mars - 217,000,000 km from the Sun
Jupiter - Jupiter - 778,000,000 km from the Sun
Saturn - Saturn - 1,427,000,000 km from the Sun
Uranus - Uranus - 2,870,000,000 km from the Sun
Neptune - Neptune - 4,497,000,000 km from the Sun
Pluto - Pluto - 5,913,000,000 km from the Sun