Now were actually amazed when we found out that the universe actually contains about 200billion galaxies, and guess how many stars a galaxy contains... yes! thats it
now, the hubble space telescope recently discovered that we were actually wrong, our universe actually contains about 2 trillion galaxies...
you heard me right, 2 trillion...
In other words, i think nothing can be estimated anyway, tomorrow they'll be telling us about a gazillion more galaxies
source:newskingzdotcom