If you change the channel on your TV to one that's not tuned, 1% of the static you see is "stretched" gamma radiation from the creation of atoms 13.8Ga - The Big Bang. The Cosmic Microwave Background Radiation, which pervades all space.
If there's nothing to watch, you can always watch the birth of the universe!
Interesting, but whats the relation with the sun light we are talking about?\
Are there not many suns in the universe? and does sunlight has anything to do with the birth of the universe, the so called big bang... In any case, my previous question remains, knowing that we are not talking about radiation per se but light... and what makes it visible for some distance only.