Chapter 33, Problem 14Q

To determine

To Compare:Explosion on Earth and the Big Bang.

Explanation of Solution

Introduction:

The universe began with the Big Bang. According to the theory, all the matter and radiation was concentrated at a single point which exploded and marked the beginning of the universe. There on the universe started expanding.

Consider a huge hydrogen bomb explosion on earth. The debris moves at $300\text{m/s}$ through air. The temperature at the centre is about $100$ million degrees Celsius. As per cosmologists, energy travelled at speed of light and the temperature of the entire universe was $1000$ trillion degrees Celsius within a fraction of second of the explosion. The Big Bang did not expand through anything. Cosmologistsbelievethat the Big Bang created and stretched space itself, expanding the universe.