What is the largest planet in our solar system?

Our solar system's undisputed giant is a gas behemoth with an equatorial diameter roughly eleven times that of Earth. This colossal world is so immense that it could comfortably contain over 1,300 Earths within its volume. In fact, it holds more than two and a half times the mass of all the other planets in our solar system combined, making its gravitational influence incredibly significant.

This majestic planet is a gas giant, primarily composed of hydrogen and helium, similar to the Sun, and lacks a solid surface. Its distinctive appearance is characterized by swirling, colorful cloud bands and the famous Great Red Spot, an enormous storm larger than Earth that has been raging for at least 150 years. Despite its immense size, it boasts the shortest day of any planet in our solar system, completing a full rotation in just under ten hours. This rapid spin causes it to bulge slightly at its equator.

Adding to its grandeur, this planet is orbited by at least 95 known moons, forming a miniature solar system of its own. Among these are the four large Galilean moons—Io, Europa, Ganymede, and Callisto—which are fascinating worlds in their own right and can be observed with common binoculars. Ganymede, the largest of these, is even bigger than the planet Mercury. Its powerful magnetic field is also the strongest in the solar system, further showcasing its dominant presence.