The biggest planet in our solar system is Jupiter. Here is a detailed explanation:
1. Jupiter:
- Jupiter is the largest planet in our solar system.
- It has a diameter of about 86,881 miles (139,820 kilometers), which is more than 11 times the diameter of Earth.
- Jupiter is a gas giant composed mainly of hydrogen and helium.
- It is known for its distinct bands of clouds and its iconic Great Red Spot, which is a giant storm that has been raging for centuries.
2. Venus:
- Venus is often referred to as Earth's sister planet due to its similar size and composition.
- However, when it comes to size, Venus is smaller than Earth and significantly smaller than Jupiter.
- Venus has a diameter of about 7,521 miles (12,104 kilometers).
3. Uranus:
- Uranus is the seventh planet from the Sun and is classified as an ice giant.
- It has a diameter of about 31,518 miles (50,724 kilometers), making it smaller than both Jupiter and Saturn.
4. Saturn:
- Saturn is the second-largest planet in our solar system, but it is smaller than Jupiter.
- It has a diameter of about 72,367 miles (116,464 kilometers).
- Saturn is known for its beautiful rings made up of ice particles and dust.
Therefore, the correct answer is Jupiter (option A) as it is the largest planet in our solar system with a diameter more than 11 times that of Earth.

Jupiter