How many stars are in outer space and the galaxy?

Answer 1

Astronomers estimate that there is about a centillion (10^303) stars in the observable

Universe. That is to say the portion of the Universe that we can see. More than likely,

there are even more than that, but we are still counting.

====================================

Answer #2:

I was in the neighborhood, happened to see Answer #1, and stopped in to say that

I have a problem with that number.

-- Estimates of the number of stars in the Milky Way (our galaxy) are in the range of

200-400 billion.

-- Compared to other galaxies that we can observe, the Milky Way (our galaxy) seems

to be bigger than average, and have more stars than average.

-- Estimates of the number of galaxies that we can see range up to maybe 100 billion.

Let's generate an unreasonably huge estimate of the total number of stars in the presently

observable universe ... one that we can be sure is too big. Let's assume that ...

-- The number of stars in the Milky Way (our galaxy) is at the highest end of the estimated

range ... 400 billion.

-- Instead of the Milky Way (our galaxy) being bigger than average, assume that every galaxy

has as many stars as the Milky Way (our galaxy) has ... 400 billion.

-- Instead of only maybe 100 billion galaxies, let's assume that there are as many other galaxies

as there are stars in every galaxy ... 400 billion.

Then the total number of stars would be (400 billion)2 = only a mere 1.6 x 1023, NOT 10303 .

And besides that ... How can Answer #1 start by saying "Astronomers estimate that . . ."

and then go on to say "More than likely there are even more than that ..." ? Who says ?

Another answer: I more or less agree with the previous answer. The estimate

I am familiar with is "about 1022 stars".