Explains the different theories relating to the Birth of the Universe.

1. TheOriginoftheUniverse

2. It all started off with a very Big Bang.
According to this theory,all the matter and energy in the
Universe must have been compressed into a very small
space.Then it exploded from that single point and started
expanding.
The expansion is still going on.We can use the current rate
of expansion of the Universe to estimatee its age.We
think that the Big Bang happened abouut 14 billion years
ago.

3. The theory of Steady State says that the universe has
always existed as it is no and will always do.Its the
idea that the universe appears pretty much the same
everywhere.The theory talks about the apparent expansion
by suggesting that matter is being created in the spaces
as the universe expands.

4. The discovery of the cosmic microwave background
radiation(CMBR) some years later was strong evidence that
the Big Bang was the more likely explanation of the two.

5. Uniform Microwave Radiation
Scientists have detected low frequency electromagnetic
radiation coming from all parts of the Universe.
This Radiation is largely in the microwave background
radiation(CMBR).
The Big Bang theory is the only theory that can explain the
CMBR.
Just after the Big Bang while the universe was still
exteremly hot everything in the universe emitted very
high frequency Radiation.As the universe expanded it has
cooled,and this radiation has dropped in frequency and is
now seen as microwave radiation.

6. The Limitations of the Big Bang Theory
Nearly all astronomers agree that there was a Big
Bang.However there are some who still believe in the
steady State theory.Some of these say the evidence points
that way.Others maybe don't want to change their mind-
that would mean admitting they were wrong in the first
place.