"Planets of the Solar System to scale. Jupiter and Saturn (top row), Uranus and Neptune (top middle), Earth and Venus (bottom middle), Mars and Mercury. If the Sun-Neptune distance were scaled to the length of a football or soccer field of about 100 meters long, the Sun would be less than 3 cm in diameter (about two-thirds that of a golf ball), the gas giants would all be less than 3 mm across (smaller than a BB pellet) and Earth's diameter and the other terrestrial planets would be less than 0.3 mm (smaller than a flea)." #science #astronomy #solar_systems #pub