how many stars are in the sky?

Question

my friend wanted to know

Answer 1

There are approximately 7*10^22 (70 000 000 000 000 000 000 000) stars in the known Universe. However, most of these cannot be seen with the naked eye, and some can only be seen through their combined light. The number of stars individually visible with the naked eye is estimated at a few thousand, and all of them are inside our galaxy.

Answer 2

The answer ranges from more than 200 billion stars in our galaxy alone to 3 thousand million billion stars (that's a 3 followed by 16 zeroes), in the universe.

NASA alleges there are zillions of uncountable stars... the light reaching us is too weak and too small to be sure whether they are actually stars or if they are just planets or other galaxies filled with more stars.

Answer 3

All of the stars you can see in the sky belong to our own galaxy (the "Milky Way"). Because we're on one side of the galaxy, and the other side is mostly hidden behind the huge conglomeration of dust and gas in our galaxy's spiral arms, we can really only see about 1/3 of the stars in our galaxy, and only a small fraction of those are visible to the naked eye (because the rest are too dim or too far away to be seen without a telescope). Our galaxy has about 400 billion stars or so. And our galaxy is one of hundreds of billions of other galaxies in our universe.

So, how many stars in the sky? Several thousand visible to the naked eye. Many billions visible with a telescope.

Answer 4

How many stars you can see depend very much on where you are - most people live in urban or suburban environments, and can see only a fraction of the stars that you can see from a rural or wilderness site.

Other factors are the ability of your eyes to detect faint stars, which varies a great deal from person to person. Anywhere from 5,000 to 10,000 stars are probably within the limit of a person with good vision from a dark site over the whole sky.

Answer 5

I once heard there are enough stars in the sky for EVERY single person on the planet to personally own 1 million of them. That is a lot of stars.

Answer 6

Stars are not spread uniformly across the universe, but are normally grouped into galaxies along with interstellar gas and dust. A typical galaxy contains hundreds of billions of stars, and there are more than 100 billion (1011) galaxies in the observable universe.[34]

Astronomers estimate that there are at least 70 sextillion (7×1022) stars in the known universe.[35] That is 230 billion times as many as the 300 billion in our own Milky Way.

Answer 7

Interesting you freind wanted to know ... didn't you just ask the very same question a couple of days ago ?
However I am pleased to get some more points again by such easy answers.

There are an estimated one billion stars in our galaxy (MilkyWay). Furthermore there are an estimated one billion other galaxies with about the same amount of stars, so it would be over all the universe about 1,000,000,000^2 stars, or written in scientific form, it's about 10^18 stars in the universe (a careful estimate, because we can't count them all).

Answer 8

As Carl Sagan used to say... "Billions and billions of stars in trajectories...." He said stuff like that a lot. Of coarse how many you see depends on the visibility factor. If you are in the city the glow from the lights will obscure about 98% of the stars from view. Out in the country you can see a whole lot better and the display is quite impressive.

Have a great day!!!

Answer 9

Hi. If the average galaxy has 300 billion and there were 300 billion galaxies, the the answer would be about 300 billion squared.

Answer 10

It's like asking how many grains of sand there are on the whole Earth. 'Tis impossible to answer. Though, be assured, there are many, many, stars in the sky. :)