"Corona Radiata" is the eighth track on the Nine Inch Nails album The Slip. It is an instrumental, and at 7:33 is the longest track on the album. It is also the longest studio NIN song released (second is Memorabilia).
Corona Radiata are several protective layers surrounding ova or unfertilized egg cell, responsible with supplying the ova or egg cell with protein. The artwork for the song most probably represents an egg cell with the distinct corona radiata surrounding it.