The answer to yesterday's connundrum

Pull up your trousers.

The answer is (ta^da)
The planet Saturn.


Universe today have the lowdown, but to me...

It's a map of radio emissions from Saturn, the Cassini mission has been gathering this data for ages. The radio singnals are generated by electrons spiraling around in Saturn's magnetic field which the craft then listens to.

See it here as a 3D space projection. Then listen to the audio again, just like you would on your radio set at home; kinda.

Now what was this thing about synesthesia?