This photo of Jupiter featuring the Great Red Spot was taken by the Voyager 1 spacecraft as it flew-by the planet in 1979. The Great Red Spot is a giant hurricane-like storm rotating in the planet’s atmosphere. It is so large that three Earth’s would fit inside. It is still unclear as to how old this storm is, since it was first recorded by astronomers over 300 years ago, suggesting that it could be much older than that. How it managed to remain active for that long still remains a mystery.
Image Credit: NASA, Voyager 1 mission.