Answer:
Until I am measured, I am not known. Yet, how you miss me when I have flown. What Am I?
When I live I cry if you don't kill me I'll die.
One simple click, one simple flash. A piece of memory, for years I'll last. What am I?
Adored by few, feared and hated by many. Mistress of the entire universal reason, master in the art of numbers. Some may have solved many of my mysteries, but there are still many of them to find. What am I?
I row quickly with four oars, but never come out from under my own roof. What am I?
When someone uses this acronym, you know you've got to pick up the pace