Based on the diameters provided for each celestial body in the Solar System, the ranking from largest to smallest is as follows:
- Sun (1,392,000 km) - 1
- Jupiter (142,984 km) - 2
- Saturn (120,536 km) - 3
- Uranus (51,118 km) - 4
- Neptune (49,528 km) - 5
- Earth (12,756 km) - 6
- Venus (12,104 km) - 7
- Mars (6,792 km) - 8
- Mercury (4,879 km) - 9
So the correct ranking order should be:
- Sun
- Jupiter
- Saturn
- Uranus
- Neptune
- Earth
- Venus
- Mars
- Mercury