The big bang caused the background radiation.
the big bang caused the cosmic background radiations
The "big bang" better described as the rapid expansion of our Universe.
cosmic background radiation :) This phenomenon can be picked up by an ordinary radio or tv. If your radio is not tuned into a station, then some of the the noise (interference) you hear is the cosmic background radiation caused by the Big Bang.
The radiation left over from the big bang is found in the microwave region of the electromagnetic spectrum. As the universe expanded and cooled, the intense hard gamma radiation that existed became radio waves in the low gigahertz region, characteristic of a temperature around 30 Kelvin.
The source of cosmic background radiation filled the entire universe.
Natural background radiation
the weakness of cosmic back ground radiation as those radiation are left over of big bangs
Primordial background radiation is in actuality Cosmic Microwave Background. To discover just what Cosmic Microwave Background theories are, visit the URL posted below:http://www.astro.ucla.edu/~wright/CMB.html
cosmic microwave background radiation.
radiationsThe big bang
That is not currently known for sure. Check the Wikipedia article on "Ultra-high energy cosmic rays" for different explanations about how they MIGHT be caused.
The cosmic background radiation is believed to be the remains of the radiation emitted by the Universe when it started to get transparent - when it had cooled down to a temperature of about 3000 kelvin.
The cosmic background radiation was discovered in 1964 by American radio astronomers Arno Penzias and Robert Wilson