How many stars exist in the universe?

The exact number of stars in the universe is difficult to determine with precision. Estimates suggest that there are anywhere between 100 billion to 400 billion stars in our own Milky Way galaxy alone. Considering that there are billions of galaxies in the observable universe, the total number of stars is believed to be in the range of 10^22 to 10^24, or roughly 10 sextillion to 1 septillion stars. These numbers are incredibly vast, highlighting the immense scale and diversity of the cosmos.