We have 8 planets and 5 dwarf planets in our solar system. Jupiter is by far the biggest planet. The red little storm on Jupiter is 4 times bigger than Earth. Mercury comes in as smallest. It's around 3 times smaller than Earth. The smallest isn't always the closest to the sun. For instance, Mars is smaller than Earth.

            Below is a list of all the planets and their quality's.

Name	Diameter	Distance from the Sun	Orbit Period
Mercury	4,879 km	57,909,227 km (0.39 AU)	88 day
Venus	12,104 km	108,209,475 km (0.73 AU)	225 days
Earth	12,742 km	149,598,262 km (1 AU)	365.26 days
Mars	6,779 km	227,943,824 km (1.38 AU)	1.9 years
Jupiter	139,822 km	778,340,821 km (5.20 AU)	11.9 years
Saturn	116,464 km	1,426,666,422 km (9.58 AU)	29.5 years
Uranus	50,724 km	2,870,658,186 km (19.22 AU)	84.0 years
Neptune	49,244 km	4,498,396,441 km (30.10 AU)	164.8 years