Great Red Spot
From Tardis Wiki, the free Doctor Who reference
The Great Red Spot was, according to Norma Kelligan, the "largest, most violent storm in the solar system. It was more than double Earth's size and by Evelyn Smythe's time had been around for over three hundred years. In the 26th century, records indicated that it had been growing for five hundred years. (PROSE: Jupiter)
