Here’s a question you’ve probably never asked yourself: What is the total number of photons (particles of light) that have been produced in the Universe,ever, from the large Bang to today?And yes, and duh,of course I’ve asked that question to myself before, mostly in an effort to come up with the biggest practical number I could deem of (that is, and a number with some physical meaning,a number you could exhaust to actually count something up), but also because I’m a enormous dork.
Source: blastr.com