Revelation 8:11-12

11And the name of the star is called Wormwood; and the third part of the waters became wormwood, and many of the men died of the waters because they were made bitter.

12And the fourth angel sounded [his] trumpet: and the third part of the sun was smitten, and the third part of the moon, and the third part of the stars; so that the third part of them should be darkened, and that the day should not appear [for] the third part of it, and the night the same.