Timely. Just finished listening to Lawrence Krauss's 'A Universe From Nothing' audio book for the third time hoping a fragment may stick to my tiny brain. As noted by a previous contributor, we do indeed live in a wonderful era, if only for the fact that galaxies with a red shift currently of 1.4 or more are moving away from us faster than the speed of light, in the not to distant future, all visible evidence of the origins of the universe, or 'big bang' will have vanished for all time. Its literally a race against time to learn all we can.
Then you move onto trying to comprehend what something like the Hubble deep field images represent in time, distance and scale, humbling, awe inspiring stuff.