They didn't. There are only rough estimates, and only for the so-called "observable Universe". Even in our own galaxy, estimates for the number of stars vary from 100 to 400 billion (1 x 1011 to 4 x 1011) stars.
there are so many that it would be impossible to find the total amount of stars because all stars die and become reborn
There no how many is in the sky because stars always came out and you can't count it so there's how many stars in the sky because it very much - kandy
The Stars in the Bright Sky has 400 pages.
scientists aren't sure how many but in the current estimate, there are 100 billion stars in the galaxy and there are an estimate of 100 trillion galaxies in the universe. and the rest it's up to you to do the math.....
Because stars not like planets revolve and stars last at the night sky for many many years even at your lifetime.
There no how many is in the sky because stars always came out and you can't count it so there's how many stars in the sky because it very much - kandy
Stars, andcloudsSun and moon
As many stars are there in the sky.
As many as the stars in the sky
There are to many stars in the sky ! you can't count them . only godcan
Scientists measure distances to stars to determine their exact positions in the sky and their relationships with other astronomical objects. By observing how stars interact with each other, scientists can understand the dynamics of star systems, galaxies, and the Universe as a whole, helping to unravel the mysteries of celestial phenomena.
When you look at the night sky you can see many beautiful stars. If you are out in the country or camping in the mountains or the desert away from the city lights, you may see thousands of them. You may even be able to see part of the Milky Way. In a town or city, you can't see nearly as many stars because the city lights create a glow in the sky masking many of them. There are several different kinds of stars in the sky. Some are very big. A couple of stars have been found that are 100 to 200 times larger than the sun. Some very old stars are smaller than the Earth. Scientists study stars and place them in groups based on how they are alike and how they are different.