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Do all galaxies contain billions of stars?
Yes, most galaxies contain billions of stars. For instance, our Milky Way galaxy is estimated to have around 100 to 400 billion stars. However, there are smaller galaxies, known as dwarf galaxies, that may contain as few as a few million stars. Despite this variation, the majority of galaxies are star-rich and typically hold vast numbers of stars.
What is larger a red giant a galaxy the universe or the solar system?
The Universe may hold over a trillion (1,000,000,000,000) galaxies. A galaxy might have several billion stars. The planetary portion of the Solar System is several billion miles in diameter; no star is that big, although some red giants would reach the Earth if they were centered on the Sun.
Who found dark matter?
No one has discovered dark matter. Dark matter is a concept to explain the rotation of galaxies. We simply do not know what it is and where it is. When we looked at nearby spiral galaxies astronomers could not explain how individual stars could be moving so fast. If you add all the mass of the material we can see or infer the gravity should not be able to hold the stars in orbit. They should be streaming off. Dark matter was invented to explain this. The theory suggest that 60 to 90% of the matter in the galaxy needs to this strange dark matter.
What force hold the milky way and all other galaxies together?
gravity, duhh :Plol yaa its kinda obvieousThe force that causes both, stars and galaxies to form is the gravitational force.
What other types of galaxies are there besides the milky way?
The answer is YES. There are an estimated 200 billion galaxies in the known Universe. Most of these galaxies are relatively similar to our own, some bigger, some smaller, some differently shaped. Most galaxies hold 50-200 billion stars, and average about 50,000 - 100,000 light years across. Light travels at 180,000 miles PER SECOND, so if it only takes 2 seconds to get to the moon, 30 seconds to Mars, but 100,000 light years to cross our own galaxy, imagine the size! Mind boggling!
Do all galaxies contain billions of stars?
Yes, most galaxies contain billions of stars. For instance, our Milky Way galaxy is estimated to have around 100 to 400 billion stars. However, there are smaller galaxies, known as dwarf galaxies, that may contain as few as a few million stars. Despite this variation, the majority of galaxies are star-rich and typically hold vast numbers of stars.
What is the relationship between the expanding universe and the distances between stars and galaxies?
This is mostly theory, Galaxies are made of billions of stars. For some reason Galaxy's hold on to their stars. We do not really understand how galaxy's can yet hold their form like this. Our math so far has trouble with making sense of this. When comparing one galaxy to another, size becomes so large words are hard to describe the distance of space. There is an an incredible amount of space between everything out there. What is the distance between galaxies, why is it there, The expanding universe is trying to explain the growing spaces between galaxies yet the galaxies appear to stay bound to themselves.
How many stars can a star gauge hold?
In Super Mario Galaxy 1 you can get 121 power stars, but in Super Mario Galaxy 2 the star gauge can hold 240 stars.
What parts hold the galaxies togher?
Galaxies are held together by the gravity, which results of their mass. It turns out that the mass of the known stars and other objects is not enough to hold galaxies together (they rotate way too fast for the known masses) - rather, much of the mass - about 80%, though it depends on the individual galaxy - is made up of an unknown substance, currently called "dark matter".
Is it true the universe is not bigger than the world?
No. Of course not. The universe is big enough to hold earth and all the other planets in the Milky Way Galaxy and all other galaxies and the sun and the moon and the stars. There is no way that the universe could be smaller that Earth. =)
What is larger a red giant a galaxy the universe or the solar system?
The Universe may hold over a trillion (1,000,000,000,000) galaxies. A galaxy might have several billion stars. The planetary portion of the Solar System is several billion miles in diameter; no star is that big, although some red giants would reach the Earth if they were centered on the Sun.
What is An example of a elliptical galaxy?
The Milky Way is about 100,000 light years in diameter (one light year is about 9.5 x 1015 meters), but only about 1000 light years thick while M10 is a globular cluster of about 100 stars, all quite similar in size, M12 is an open cluster of bright and fainter stars, more loosely packed than M10. Again about 100 stars while M14 is a fine globular cluster of many hundreds of stars and with a good Telescope can be resolved to the core, on a moonless night. No it is actually one of the largest galaxies the only other one that is larger is the Andromeda Galaxy(M31)
What are the key differences between a star cluster and a galaxy?
A star cluster is a group of stars that are close together and held together by gravity, while a galaxy is a much larger system of stars, gas, and dust held together by gravity. Galaxies can contain billions of stars and are much larger than star clusters.
How is gravity important to the galaxies within our universe?
Gravity is crucial for the formation and structure of galaxies in our universe. It pulls together gas, dust, and stars, allowing them to clump together and form galaxies. Without gravity, galaxies would not be able to hold together and maintain their shape. Additionally, gravity plays a key role in the interactions between galaxies, influencing their movement and behavior within the universe.
Who found dark matter?
No one has discovered dark matter. Dark matter is a concept to explain the rotation of galaxies. We simply do not know what it is and where it is. When we looked at nearby spiral galaxies astronomers could not explain how individual stars could be moving so fast. If you add all the mass of the material we can see or infer the gravity should not be able to hold the stars in orbit. They should be streaming off. Dark matter was invented to explain this. The theory suggest that 60 to 90% of the matter in the galaxy needs to this strange dark matter.
Why does every galaxy have a black hole?
Not every galaxy has a black hole, but many galaxies do. Black holes are formed when massive stars collapse in on themselves, creating a region of intense gravity where even light cannot escape. These black holes can be found at the center of galaxies, including our own Milky Way, due to the gravitational forces at play in these massive systems.
Why are black holes located in the center of galaxies?
Black holes are located in the center of galaxies because they are formed from the collapse of massive stars. As galaxies form and evolve, the gravitational pull of these black holes helps to shape and hold together the structure of the galaxy.
