How this Universe is Created ?

Maharishi Parashara is narrating to Maitreya, the science of Jyotish as heard through Lord Brahma. Blessed are the students who follow the teaching of this Vedic Science and who are peacefully disposed, who honor the preceptors (and elders), who speak only the truth and believe in the judgment of God. It will no doubt be sad to impart knowledge of this science to an unwilling student, to a non believer of God or to a crafty person.
Shree Vishnu has no beginning. He is the lord (of all matters), has a pure spirit, is endowed with the three gunas, is the Author of this Universe, is glorious, is the Cause and is endowed with courage. He authored the Universe and administers it with a quarter of his power. The other three quarters of Him, filled with nectar, are known only to the philosophers (people of maturity). The Principal Divine entity who is responsible for evolution, is both perceptible and imperceptible in Vasudeva. The Imperceptible part of the Lord has dual powers, while the Perceptible has triple (powers) and is said to be endowed with endless power.
The three powers are: Shree Shakti (Mother Lakshmi) with Sattva-guna, Bhoo Shakti (Mother-Earth) with Rajo-guna,  and Neel Shakti with Tamo-guna. Apart from the three,  the fourth kind of Vishnu, influenced by Shree Shakti and Bhoo Shakti, assumes the form of Shankarshan if with Tamo-guna, of Pradyumna if with Rajo guna, and of Anirudh if with Sattva guna.
Mahattatwa, Ahamkar, Ahamkar Murti Brahma are born from Shankarshan, Pradyumna, and Anirudha respectively. All these three forms are endowed with all the three gunas. Thus, they will have the predominance of the Guna due to their origin.
In brief, Ahamkar is of three classes, i.e. with Sattvic, Rajasic, and Tamasic dispositions. Divine class, sensory organs and the five primordial compounds (space, air, fire, water, and earth) are respectively from the said three Ahamkaras and are endowed with their respective strengths. Lord Vishnu, coupled with Shri Shakti rules over the three worlds. Coupled with Bhoo Shakti, He is Brahma causing the Universe.Coupled with Neel Shakti, He is Shiva, destroying the Universe.
The Lord is in all beings and the entire Universe is in Him. All beings contain both Jivatma and Paramatmamshas. Some have predominance of the former, while yet some have the latter in predominance. Paramatmamsha is predominant in the grahas, viz. Surya, etc., and Brahma, Shiva and others. Their powers or consorts too have predominance of Paramatmamsha. Others have more of Jivatmamsha.