app how many stars are there?

Answer 1

estimate 100,000,000,000 stars in our galaxy
estimate 100,000,000,000 galaxies in our known universe
estimate 10,000,000,000,000,000,000,000 (1x10^22) stars in the known universe

I used the minimun estimates, if i had used the higher estimates the numbers of star in the known universe would reach up to 7x10^22

Answer 2

Hello

Look into the sky on a clear night, out of the glare of streetlights, and you will see a few thousand individual stars with your naked eyes. With even a modest amateur telescope, millions more will come into view. So how many stars are there in the Universe? It is easy to ask this question, but difficult for scientists to give a fair answer!

Stars are not scattered randomly through space, they are gathered together into vast groups known as galaxies. The Sun belongs to a galaxy called the Milky Way. Astronomers estimate there are about 100 thousand million stars in the Milky Way alone. Outside that, there are millions upon millions of other galaxies also!
In 1995, an image from the Hubble Space Telescope (HST) suggested that star formation had reached a peak at roughly seven thousand million years ago. Recently, however, astronomers have thought again.
The Hubble Deep Field image was taken at optical wavelengths and there is now some evidence that a lot of early star formation was hidden by thick dust clouds. Dust clouds block the stars from view and convert their light into infrared radiation, making them invisible to the HST.
Herschel is designed to view exactly the time in the evolution of the Universe, at the right wavelengths where it is thought the majority of the obscured star formation can be seen.
So with Herschel, astronomers will see many more stars than before. We will be one step closer to provide a more reliable estimate to that question asked so often in the past - "How many stars are there?"

There are still vast areas of space which have yet been discovered so an ACTUAL calculation of how many stars there is remains a mystery

Answer 3

Our galaxy has about 200 billion stars, but you can only resolve about 3000 or so any given dark night with just your eyes. The Andromeda galaxy has 400 billion stars. Most galaxies have hundreds of billions of stars, and there are billions of galaxies in the universe. So a lot.

Answer 4

Imagine our Sun as a grain of sugar now imagine that grain of sugar in a 1KG bag of Sugar with each grain of sugar as a star this would represent the galaxy we live in this is called the milky way.

Now imagine the Milky Way as a grain of Sugar in another 1 Kg bag of Sugar and each grain of sugar represented a galaxy then that would represent the observed universe.

The final problem the universe is expanding as the stars are moving away. This movement is accelorating. The problem is as the acceloration moves beyond the speed of light they will no longer be visable. So Muliply the observed number by 1,000,000,000,000,000,000 just to be sure.

Now go buy some sugar and work it out

Answer 5

There are billions of stars speculated but scientist have calculated with telescope (visual and radio) that there is possibly about 6000 visible stars to Earth's view point.

Answer 6

There are more stars than there are grains of sand.

Answer 7

Infinity.I don`t think we have made it to the end of the universe just jet.

Answer 8

countable but I couldn't count.... just like film/modelstars... I felt but I couldn't touch

Answer 9

Its countless and infinity.

Its simple how many hairs you have on your head?
Its infinity.

Answer 10

count them urself....