The third angel sounded, and a great star fell from heaven, burning like a torch, and it fell on a third of the rivers and on the springs of waters. The name of the star is called Wormwood; and a third of the waters became wormwood, and many men died from the waters, because they were made bitter.
“A great star”, "burning like a torch"
This could be an allegory for the superheated, burning and glowing meltdown, of nuclear fuel rods.
"Fell from heaven"
This could be an allegory for a sun-like nuclear reaction tunneling down by means of vaporization into the Earth.
"The name of the star is Wormwood"
"A third of the waters became wormwood, and many men died of the water"
"It was made bitter"
This allegory and name refers to "Chernobyl" as the beginning nuclear power meltdown. “Chernobyl” is also a name used in the Ukrainian language, for a bitter herb found in that country, and when translated from Ukrainian to English, “Chernobyl” means “Wormwood”. The waters become poisonous as well as bitter from the radiation leak.
"Because they have forsaken my law which I set before them, and have not obeyed my voice, or walked in accord with it, but have stubbornly followed their own hearts and have gone after Ba'als, as their fathers taught them, Therefore thus says the Lord of hosts, the God of Israel: Behold, I will feed this people with wormwood, and give them poisonous water to drink. I will scatter them among the nations whom neither they nor their fathers have known; and I will send the sword after them, until I have consumed them."
The Fukushima nuclear disaster is the latest "Wormwood" incident that is contaminating the world.
Chernobyl-like radiation found in Tokyo