Answer to Question #104591 in Astronomy | Astrophysics for Abhishek

Question

If the temperature of the background radiation today is 3k, at what time after the birth of the universe was the temperature 1000000000000000k. Take the age of the universe as 15×1000000000 years.

Answer 1

According to Lurquin (2003), the temperature of 10¹⁵ was at $t=10^{-10}\text{ s}.$

Reference

Lurquin, P. F. (2003). The Origins of Life and the Universe