well, you could give some thought to a process in which we have all (mostly happily) participated
>>> human being is made up of billions of cells, how did this happen?<<<
1 - out of some misc particles, your father made a cell (actually he made them by the 100s of millions) but only one counted in your case
2 - your mom made a single cell out of misc particles (I understand 100s were made while still in her mom's womb) but only one counted in your case
3 - and the two connected and then divided and divided and divided until "billions" happened
Not really a mystery at all --
I'll get back to you on that darkness thing -- has something to do with E=MCsquared, time and gravity