The largest planet in the Solar System is which planet?

The largest planet in the Solar System is which planet?

• A. Jupiter
• B. Saturn
• C. Neptune
• D. Mars

Answer: (A)

When we talk about the largest planet, we’re focusing on size and mass—the planet that has the greatest diameter and volume, and therefore the greatest mass among the planets. Jupiter fits that description. It’s a gas giant with a diameter of about 86,881 miles (139,822 kilometers) and a mass around 1.9×10^27 kilograms, roughly 318 times the mass of Earth. Those immense dimensions mean it overwhelms every other planet, so it tops the list as the largest. Saturn is the next biggest, while Neptune and Mars are far smaller.

When we talk about the largest planet, we’re focusing on size and mass—the planet that has the greatest diameter and volume, and therefore the greatest mass among the planets. Jupiter fits that description. It’s a gas giant with a diameter of about 86,881 miles (139,822 kilometers) and a mass around 1.9×10^27 kilograms, roughly 318 times the mass of Earth. Those immense dimensions mean it overwhelms every other planet, so it tops the list as the largest. Saturn is the next biggest, while Neptune and Mars are far smaller.