Doing this simple calculation gives the age of the cosmos to be 311 trillion years.Ĭarl Sagan, the noted scientist says in relation to this, ''The Hindu religion is the only one of the world's great faiths dedicated to the idea that the Cosmos itself undergoes an immense, indeed an infinite, number of deaths and rebirths. 360 Brahma days constitute a Brahma year while 360 years represent the lifetime of Brahma which is the life of the cosmos. The day-night of Brahma together constitutes one Brahma day (8.64 billion years). There is an equivalent night-time of 4,320,000,000 years. The reigning period of a manu is onemanvantara which is 71.42 mahayugas. The kalpa is ruled by 14 manus in succession. 1000 such mahayugas comprise a day-time of Brahma also known as a Kalpa. Firstly, we need to know the Hindu Cosmic cycle.ġ Mahayuga = Sum of 4 Yugas(Krita, Treta, Dwapara and Kali) =Ĥ,320,000 years. We are always curious to know the meaning of the Sankalpam that we take before the start of a pooja or a ritual. Please read for understanding what we say during Sankalpam Sankalpam and its meaning ~ Detailed one.