What is the largest planet in our solar system?

Jupiter is the largest planet in our solar system, boasting a diameter of about 86,881 miles (139,822 kilometers), which is more than 11 times that of Earth. Its mass is about 318 times greater than that of Earth, making it not only the largest by size but also the most massive planet. Jupiter's immense size supports a thick atmosphere composed mainly of hydrogen and helium, along with numerous characteristic features such as its Great Red Spot—a giant storm that has been ongoing for centuries—and a strong magnetic field.

Understanding Jupiter's size is crucial for comparative planetology, as it serves as a reference point for understanding the characteristics of other planets in our solar system. In contrast, Saturn, while also a massive planet, is smaller than Jupiter. Uranus and Neptune are the two ice giants, both significantly smaller than Jupiter and Saturn, primarily due to their different compositions and formation histories. Therefore, the selection of Jupiter illustrates not only its physical stature among its planetary peers but also emphasizes its dominant presence in the solar system.