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physics origins of universe
Question Answer
how many theories are there. name them. steady state theory and big bang theory.
steady state theory the steady state theory says that the universe has always existed. it is expanding and new matter is being created as it expands to keep the density constant.
The Big Bang Theory The Big Bang theory states that the whole universe started out as a tiny particle. The Universe expanded from this point and it is still expanding today.
red shift light from other galaxies has a longer wavelength than expected. the change in wavelength shows that galaxies are moving away. more distant galaxies have greater red shift then the nearer ones. this suggests that the universe is expanding.
Cosmic Microwave Background radiation scientists detected low frequency electromagnetic radiation coming from all parts of the universe. this is known as CMB. big bang theory says this is energy created at the beginning of the universe linked to an ageing universe.

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