Is it possible to measure the amount of light in the Universe? How much? Compare with hydrogen, please.?

Answer 1

1. An accurate measurement? No.
2. best guess is that for every atom of matter in the universe, there are 10 billion photons.
3. not much of a comparison. Best guess on the number of Hydrogen atoms in the universe is 3 x 10^79.

so the ratio is thought to be around
10000000000:1
photons:hydrogen

But again this is best guess type stuff. If anyone says they have anything other than a best guess, they're lying. Thats all we can do right now. The guess is based on solid science and mathematics, but to actually prove it is impossible.

Bones: I suggest you learn how to spell hydrogen before saying others are wrong. Sources are below for my previous statements...they are still best guesses, not hard fact.

Sorry Bones, but you are wrong, wrong, wrong...wrong, wrong, wrong, wrong.

Answer 2

Do you mean the total M/E of photons produced since the birth of the universe? I doubt that it's possible to even make a good guesstimate of that.

As for the second part of your question, since the bulk of universal mass continues to be hydrogen, but more importantly, since protons do not decay, it is highly probable that the M/E of hydrogen is exponentially greater than that of photons, since photons are born from matter annihilation.

Answer 3

these people are wrong!!!! the answer is YES. that is if big bang theory is correct. this has actually already been done. the universe contains a certain amount of energy and mass, so all one has to do is extrapolate the total amount of electromagnetic energy from the total amount of energy in the entire universe. sorry that i dont have exact figures for you, because i havent looked them up. there are websites where you can search for this answer. im sure if you type in "universal hydrogyn abundance" you might find something interesting!!!!!!

Answer 4

no not possible its an infinite thing ending nowhere and always going