1. The Great Red Spot on Jupiter: This iconic storm has raged for centuries, and is easily the largest storm in terms of size. It's roughly 10,000 miles wide and 200 miles deep, which is larger than Earth.
2. Storms on the Sun: While not technically on a planet, the solar flares and coronal mass ejections from the Sun are colossal in scale. They can be thousands of miles wide and release an immense amount of energy.
3. Neptune's Great Dark Spot: This massive storm is comparable in size to the Great Red Spot, though it appears and disappears over time.
4. Saturn's Hexagon: While not a storm in the traditional sense, this hexagon-shaped jet stream on Saturn is a uniquely large and persistent atmospheric feature.
The verdict:
* Largest by size: The Great Red Spot on Jupiter wins hands down.
* Largest by energy: Solar flares and coronal mass ejections from the Sun are arguably the most powerful storms in our solar system.
Ultimately, the "largest" storm depends on your criteria. Each of these incredible events showcases the vast power and dynamism of our solar system.