<human>:  Are there any interesting facts about Jupiter?
<bot>: Yes, there are many interesting facts about Jupiter. For example, Jupiter is the largest planet in the Solar System, two and a half times more massive than all the other planets combined. It is composed primarily of gas and is the fourth brightest object in the sky after the Sun, the Moon, and Venus. Additionally, it is the fastest spinning planet in the Solar System, completing one rotation every 10 hours.