Manvantara

Manvantara is a Sanskrit term that results from a combination of words manu and antara (manu-antara or manvantara), literally meaning the duration of a Manu, or his life span. H. P. Blavatsky defines it as "a period of manifestation, as opposed to Pralaya (dissolution or rest); the term is applied to various cycles, especially to a Day of Brahma--4,320,000,000 Solar years--and to the reign of one Manu--308,448,000--".

This concept is based on a cyclic model of the universe of alternating phases of creation and dissolution:

As the sun arises every morning on our objective horizon out of its (to us) subjective and antipodal space, so does the Universe emerge periodically on the plane of objectivity, issuing from that of subjectivity—the antipodes of the former. This is the "Cycle of Life." And as the sun disappears from our horizon, so does the Universe disappear at regular periods, when the "Universal night" sets in. The Hindoos call such alternations the "Days and Nights of Brahma," or the time of Manvantara and that of Pralaya (dissolution). The Westerns may call them Universal Days and Nights if they prefer.

There are different manvantaras according to the cycle of evolution in course:

There were several "Great Ages" mentioned by the ancients. In India it embraced the whole Maha-Manvantara, the "Age of Brahma," each "Day" of which represents the Life Cycle of a chain, i. e., it embraces a period of Seven Rounds (vide "Esoteric Buddhism," by A. P. Sinnett). Thus while a "Day" and a "Night" represent, as Manvantara and Pralaya, 8,640,000,000 years, an "age" lasts through a period of 311,040,000,000,000; after which the Pralaya or dissolution of the universe becomes universal. With the Egyptian and Greeks the "Great Age" referred only to the Tropical, or Sidereal year, the duration of which is 25,868 solar years. Of the complete age--that of the Gods--they said nothing, as it was a matter to be discussed and divulged only at the Mysteries, and during the Initiation Ceremonies. The "Great Age" of the Chaldees was the same in figures as that of the Hindus.

In Hinduism

Each Manvantara is created and ruled by a specific Manu, who in turn is created by Brahmâ, the Creator himself. Manu creates the world, and all its species during that period of time, each Manvantara lasting the lifetime of a Manu, upon whose death, Brahma creates another Manu to continue the cycle of Creation.

Eventually it takes 14 Manus and their respective Manvantaras to create a Kalpa or a Day of Brahmâ (see below). Thereafter, at the end of each Kalpa, there is a period of dissolution or Pralaya wherein the world (earth and all life forms, but not the entire universe itself) is destroyed and lies in a state of rest.

In Theosophy

In the Theosophical literature the different manvantaras are related to the process of evolution through chains and rounds.

Duration of the cycles

Some of the main cycles within a maha-kalpa described in the The Secret Doctrine are:

Krita Yuga: 1,728,000 years

Treta Yuga: 1,296,000 years

Dwapara Yuga: 864,000 years

Kali Yuga: 432,000 years

Maha-Yuga (the total of the said four Yugas): 4,320,000 years

One Day of Brahmâ, a Kalpa (1,000 Maha-Yugas): 4,320,000,000 years

One Year of Brahmâ (360 of such days and nights): 3,110,400,000,000 years

One Age of Brahmâ, a Mahâ-Kalpa (100 such years): 311,040,000,000,000 years

These numbers are taken from the Hindu chronology which, according to H. P. Blavatsky "dovetail pretty nearly with those of the Secret works."

Further reading

• Manvantara at Theosopedia