How Many Stars in the Universe?
There are about 1,000,000,000,000,000,000,000 stars in space, or about 10 raised to the 21 (10 21 power, roughly.
Scientists estimate that there are about 1 000 000 000 000 stars in the Milky Way galaxy, which is one of ~1 000 000 000 000 galaxies. Although these are rough estimates, using these numbers we might imagine there are…a lot…of stars. The number is so large we usually write it in a special way. The number is 1 000 000 000 000 000 000 000 000, which has 24 zeros, so we write it as 1024.
source: ucsb.edu
