Astronomers witnessed an unusual phenomenon on Jupiter, when two enormous storms crashed together, then merged.
"Usually when we've seen two [storms] approaching each other, they bounce back away from each other," said Glenn Orton of NASA's Jet Propulsion Laboratory.
Scientists have never before been able to watch the merging of two of the giant storms, which are each about half the size of Earth. They hope that this might give them insight on the formation of Jupiter's landmark Red Spot.