All radiation is a form of energy, most of which is invisible to the human eye. UV radiation is only one form of radiation and it is measured on a scientific scale called the electromagnetic (EM) spectrum. UV radiation is only one type of EM energy you may be familiar with.
Marsala is a wine, dry or sweet, produced in the region surrounding the Italian city of Marsala in Sicily. Marsala first received Denominazione di Origine Controllata (DOC) status in 1969.
Marsala has a high enough alcohol content to remain usable for months. Fortified wines were originally produced for just that reason, to survive long voyages by sea. The wine will slowly lose quality, a process that, like most, can be slowed by refrigeration, although not strictly necessary.