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How are the universe galaxies and stars all related?
Typically irregular galaxies have the oldest stars
Stars and Galaxies are related because a galaxy is a system of billions of stars, gases, and dust.
How are planets stars galaxies solar systems and the universe relate to each other or in other words to distinguish the hierarchical relationships between the heavenly bodies?
Well to put it in simple terms, The Hierarchy of the universe would go in this order. The Universe being the biggest and containing everything would be at the top, next wo…uld come galaxies as these are clusters of stars millions of light years across. A Nebula would follow, the remnants of an exploded dead star, and also the birthing ground of new stars. A solar system would be next because it contains not just the star (or stars in a binary or ternary system) but also all the planets meteors asteroid's and planets. Then would come the star itself in Our Case the Sun and then the planets and moons and then everything smaller than that from an asteroid to a particle of dust or ice.
The answer has to be estimated; for many reasons no one can ever know the exact numbers, whatever that might mean in this context. Estimates of the number of galaxies in the u…niverse range from about 170 billion to one trillion. One trillion is one thousand millions. Estimates of the number of stars range from around 70 sextillion to 300 sextillion. Seventy sextillion is 7 followed by 22 zeros. 300 sextillion is 3 followed by 23 zeros. Some estimate as high as 10 to the power 24, which is one followed by 24 zeros. You might think that 22, 23 and 24 are small numbers here, until you begin to consider that every single one of them represents a power of ten. The number is far beyond anything that any human mind can grasp on anything close to a practical level.
Universe -> galaxy -> star -> planet
there all made of the same thing
A galaxy is made up of all sorts of matter, including stars. Many stars have object orbiting them, such as planets, asteroids, and even other stars. Solar systems orbit the …galactic centre of a galaxy. (Solar systems don't orbit a galaxy, they ARE the galaxy)
It means that life is endless; and that we are not alone in this universe.
No. Not a stellar expert here, but stars come in all sizes and colors. Red giants, main sequences, blue normals, white dwarves, super novas, and others. White dwarves are smal…ler than planets and invisible without a telescope. The Dog Star is an example of this, but somehow the Dogon tribesmen of Africa have known of its existence without telescopes for some time, and its exact position in earth's sky. Black holes are invisible even with the most powerful telescope, and their exisistence was proved mathematically by Stephen Hawking. Yes. "Shining", emitting light and electromagnetic radiation generated by nuclear fusion, are the criteria for being a star.
That is still a mystery. Obviously, they are held together by gravitation. Each star attracts each other star, and you might say that the combined force of these attractions k…eeps the galaxy together. But the known matter in our galaxy - and in other galaxies - isn't strong enough to account for the fast rotation a galaxy has. There must be about 5-10 times more matter, compared with known matter, in something invisible - commonly known as "dark matter". This mysterious dark matter can be noticed through its gravitational attraction, but it can't be seen directly.\n
According to what Carl Sagan that is true
This question has been perplexing astronomers for years. When we look at the solar system objects that are further away from the sun orbit at a slower speed. When we examine… stars in the galaxy however we do not see this we see something very strange. The stars on the outer edges of the galaxy are going far too fast not to be flung off as the centrifugal force should be much higher than the gravitational force if you take into account all the matter that we can see or theorise in black holes and stuff. Scientist invented a material called "dark matter" to try to explain this. Estimates suggest that 60-90% of all the matter in the galaxy must be this strange dark matter. As of yet we have no idea what this matter is made out of, only that it cant be ordinary matter as we would see it. It must be some strange form of matter that emits no radiation but has mass.
Why can scientist only estimate the number of stars in a galaxy and the number of galaxies in the universe?
Mainly due to the huge number of them and the large distances involved. Our galaxy, the milky way, is estimated to have around 200 billion stars, but this is only a guess. The…re is a large central bulge in the middle of the galaxy which we can't see because of interstellar gas and dust in the way. We also can't see around this bulge to the other side. Relative to the other galaxies and even stars, we can't move much to get a better view. We would have to move a few ten thousand light years from our position just for a better view of our galaxy. We have never even come close to this, at most we have sent probes a few light hours away.
Yes, stars are third cousins to most modern day galaxies.
the are related by how it orbits