There's a stable hexagon on Saturn's North Pole where each side is larger than the diameter of the Earth. It houses a swirling vortex 60 miles (100 km) high, with wind speeds of 220 mph (360 km/h).
And we can't full explain it, although we're getting close.
(📷: NASA/JPL, Cassini)
How is it that we saw a stable hexagon in the atmosphere of a gas giant and didn't stop everything til we figure THAT out?
I know it's not aliens, but this one case really seems like aliens.