How Big Are the Planets? [TAYT2qGHK7j]
How Big Are the Planets? The planets in our Solar System vary greatly in size. Here’s a comparison of their diameters: Mercury – 4,879 km Venus – 12,104 km Earth – 12,742 km Mars – 6,779 km Jupiter – 142,984 km Saturn – 120,536 km Uranus – 51,118 km Neptune – 49,528 km From the smallest rocky planet Mercury to the giant Jupiter, the difference is huge — more than 29 times bigger! Source: NASA Planetary Fact Sheet