Author and researcher Siddhartha Chhabra has published his findings in a book called The Big Bang and the Sages. One of the most significant data points is the Puranic age of the universe. For the past several thousand years or more, the Puranas have contained elaborate descriptions of the history of our universe as well as its date of origin.
When the Vedic time units are translated into Western time, the Puranic date for the beginning of the universe is 13.82 billion years.
For the past one hundred years, scientific research has gradually approached the Puranic date. Most recently, cosmologists have estimated that the universe is 13.801 billion years old.