Dsitribution of Stars and Galaxies?

In summary, stars are mostly found within galaxies, with approximately 100 billion galaxies visible from Earth, each having approximately 100 billion stars. The existence and frequency of planets is still unknown, but they are expected to be common. There is limited information on the average and maximum/minimum number of planets per star, but they appear to be more common than previously thought. Overall, there is still much to be discovered about the distribution of stars and planets in the universe in order to create an artificial universe.
  • #1
quddusaliquddus
354
2
Ho :),
I would like to know how exactly stars and galaxies are spread out throughout the universe.

Are stars only found within galaxies?

How many stars are without any planets?

Whats the average number of planets in a star with planets?

Whats the maximum/minimum number of planets with stars?

Whats the galaxy:star ratio?

Basically I would like to know everything required in order to create an artificial universe.

Thanks :)

Regards

Q

PS

If there's a good linke/document/book on this thatd be great.
 
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  • #2
While there are definitely stars outside of galaxies, the vast, vast majority are within them. There are approximately 100 billion galaxies visible from Earth, and they, on average, have approximately 100 billion stars each.

We also expect that planets are the norm, but we don't actually know how common they are. Our observations of planets are so far very limited.
 
  • #3
Most of your star/planet ratio questions we just don't know yet, although they do seem more common than was originally thought.
 

Related to Dsitribution of Stars and Galaxies?

1. What is the difference between a star and a galaxy?

A star is a celestial object made up of hot, glowing gas that produces its own light and heat through nuclear reactions. A galaxy, on the other hand, is a gravitationally bound system of stars, gas, dust, and dark matter that can contain billions or trillions of stars.

2. How are stars and galaxies distributed throughout the universe?

Stars and galaxies are not randomly distributed throughout the universe. Instead, they are organized into large structures such as clusters, filaments, and voids. These structures are formed through gravitational interactions between matter in the early universe.

3. What is the most common type of star in the Milky Way galaxy?

The most common type of star in the Milky Way galaxy is a red dwarf. These small, cool stars make up about 70% of all stars in our galaxy. They have a much longer lifespan than larger stars, which is why they are so abundant.

4. How do scientists measure the distribution of stars and galaxies?

Scientists use a variety of methods to measure the distribution of stars and galaxies. One method is to use telescopes to observe the light emitted by stars and galaxies and create maps of their locations. Another method is to study the effects of gravitational lensing, which can reveal the presence of dark matter and its distribution.

5. What is the significance of studying the distribution of stars and galaxies?

Studying the distribution of stars and galaxies can help us understand the structure and evolution of the universe. It can also provide insights into the formation of galaxies, the role of dark matter, and the fate of the universe. Additionally, understanding the distribution of stars and galaxies can help us make predictions and plan future space missions.

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