Wormwood is well known because of its use in Revelation. It is also used eight times in the Old Testament. In Hebrew, the language of the Old Testament, the word is Laanah, which is a type of plant that is not only very bitter but also poisonous. Testament, the word is Laanah, which is a type of plant that is not only very bitter but also poisonous.

Over time, it lost its Hebrew name, but it is thought the most likely candidate is Hemlock. Wormwood is a poisonous plant that is similar to modern-day hemlock.

Rev. 9 says The third angel blew his trumpet, and a great star fell from heaven, blazing like a torch. It fell on a third of the rivers and springs of water. The name of the star is Wormwood. A third of the water became wormwood, and many people died from the water because it had been made bitter. Because of the description of a great star, it is thought that this will be an asteroid or comet. But it does not seem possible that a third of the fresh water could turn bitter. Rivers and springs are freshwater sources. If it was just water, then you could suspect that something landed in the Pacific and turned it bitter. Since it is not possible, then I think the heaven talked about is the heaven where Jesus dwells. The great star is the bowl of God's wrath. God's spirit causes the water to have an algae bloom, turning it into poison. There was a radiation disaster at the Chernobyl nuclear power plant. Chernobyl literally means wormwood in Russian. That indicates that this may be a radiation event. Could an angel blast radiation around the world to the extent that water becomes toxic? Maybe a combination of the two, a radiation event causing an algal bloom.