Annihilation, or occasional dissolution.

A thousand cycles of four ages—the Golden Age, the Silver Age, the Bronze Age, and the Iron Age, or Dark Age—constitute a day of Brahma, and on each day of Brahma, fourteen Manus, or fathers of humanity, live and act. The duration of a day of Brahma is 4,320,000,000 solar years, four billion three hundred and twenty million.

The duration of Brahma's night is identical to that of the day, and therefore has the same length. During his night, Brahma sleeps, and the three planetary systems of the galaxy are destroyed.

Occasional annihilation or dissolution occurs during Brahma's night, when he sleeps.

Total material annihilation.

When Brahma's lifespan of 100 years comes to an end, the existence of the total material energy that constitutes cosmic manifestation, or material nature, also ends.

At that moment, the seven elements of material nature (the five gross elements: earth, water, air, fire, ether, total material energy, and false ego), beginning with the total material energy that composes material nature and the entire universal egg that comprises them, are destroyed.

Final annihilation or dissolution, complete dissolution.

When a person attains knowledge of the Absolute, they become aware of Absolute Truth as it truly is. They realize absolute truth as it truly is, and from then on, they know and see Krishna, God, the Supreme Person as He truly is. Whoever reaches this stage of ultimate reality, upon knowing Krishna, simultaneously discovers absolute truth, for they then know that Krishna is indeed the Absolute Truth. They have nothing more to discover.

They perceive the entire created universe as separate from the Absolute and therefore unreal.

When the illusory false ego (or material ego. The false ego is the force that binds the incarnate being to material existence. The force that drives the incarnate being to identify with their body and to want to dominate matter. Domination of material nature and identification with one's body) that binds the soul has been cut with the sword of discerning knowledge, and the realization of Lord Acyuta, the Supreme Soul, has been developed, this is called the ultimate annihilation of material existence.

Material life signifies subjection to birth and death, or to generation and annihilation. The only vessel capable of crossing the otherwise impassable ocean of material existence is that of submissive listening to the nectar-like entertainments of Krishna, God, the Supreme Person.