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Does dark matter relate to a supernova?
Probably not. Dark matter is not believed to concentrate well in or around masses the size of stars. But it does concentrate well around galaxies and clusters of galaxies. Most of the mass of a galaxy like ours is believed to be in a sphere of dark matter in the galaxy's spherical halo.
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 do astronomers theorize that most of matter in galaxies and clusters is dark matter?
Dark matter may be invisible to light, but it can still be detected, through its gravitational interactions. Specifically, it can be detected: * By the fact that galaxies rotate way too fast, for the amount of known matter. * By gravitational lensing.
How do gravity and dark matter shape the galaxies and affect their environment?
Gravity plays a crucial role in the formation and structure of galaxies by pulling together gas, dust, and dark matter to create stars and stellar systems. Dark matter, which constitutes a significant portion of the universe's mass, exerts gravitational influence, helping to bind galaxies together and affecting their rotation curves. This unseen matter also shapes the large-scale structure of the universe, influencing the distribution of galaxies and galaxy clusters. Ultimately, the interplay of gravity and dark matter not only determines the morphology of individual galaxies but also their interactions and evolution within the cosmic environment.
What is it about dark matter that has scientists saying that eighty five percent of the universe is missing?
Try not to confuse two things that have nothing in common other than their present description having the word "dark" in it. Dark matter is SOME type of matter that interacts with othe matter via gravity, but is not visible to us. It appears to some type of matter that does not interact at all, other than via gravity. What is it? We don't know -- hence the name "dark" matter. Based on the observation of its effect on rotations in galaxies and the bending of light from distant sources, we estimate there is five times more mass in our Universe that is composed of dark matter than the stuff we understand -- stuff we call "baryonic matter" or "luminous matter." Where dark matter exerts a gravitational pull, tending to bring galaxies closer together (or at least slow down the rate at which they are apart from each other), dark ENERGY is something that tends to make galaxies become further apart from each. As best we can tell, it is an inherent proper of empty space itself -- ie, whatever dark energy happens to be, it would exist even where there was no matter whatsoever. Based on the measured ability of dark energy (what EVER it happens to be -- never forget we have NO idea what this stuff even IS) to make entire galaxies move apart from each other, we estimate that the amount of energy in the Universe that is "dark" is much greater than the amount of all other energy -- and that includes all of the mass that is in dark matter! As the pie chart below shows, about 74% of the energy of the Universe is in dark energy, about 22% is the mass in dark matter, about 3.6% is in the mass of gas between galaxies, and a measly 0.4% is in the mass of stars in galaxies. This means we understand only about 5% of our Universe!
Does dark matter affect the brightness of galaxies?
By definiton, "dark" matter neither emits or absorbs light. Thus, it does not effect the brightness of galaxies.
Why do astronomers theorize that most of matter in galaxies and clusters of galaxies is dark matter?
most of the mass in a cluster of galaxies is invisible, which provides astronomers with the strongest evidence that the universe contains a great amount of DARK MATTER
Why do astronomers theorize that most of the matter in galaxies and clusters of galaxies is dark matter?
most of the mass in a cluster of galaxies is invisible, which provides astronomers with the strongest evidence that the universe contains a great amount of DARK MATTER
Does dark matter relate to a supernova?
Probably not. Dark matter is not believed to concentrate well in or around masses the size of stars. But it does concentrate well around galaxies and clusters of galaxies. Most of the mass of a galaxy like ours is believed to be in a sphere of dark matter in the galaxy's spherical halo.
Why can't the dark matter in galaxies be made of neutrinos?
Dark matter in galaxies cannot be made of neutrinos because neutrinos are too light and move too quickly to account for the gravitational effects observed in galaxies. Neutrinos also interact weakly with other particles, making them unlikely candidates for the majority of dark matter in the universe.
What has the author Robert Alexander Swaters written?
Robert Alexander Swaters has written: 'Dark matter in late-type dwarf galaxies' -- subject(s): Dissertations, Dwarf galaxies, Dark matter (Astronomy)
What do you call all the galaxies and the space between them?
The collection of all galaxies and the space between them is known as the universe. The universe is vast and contains everything that exists, including stars, planets, and dark matter.
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 do astronomers theorize that most of matter in galaxies and clusters is dark matter?
Dark matter may be invisible to light, but it can still be detected, through its gravitational interactions. Specifically, it can be detected: * By the fact that galaxies rotate way too fast, for the amount of known matter. * By gravitational lensing.
How many people believe dark matter exists?
Dark Matter is required to exist because without it all galaxies would fly apart. In our Milky Way Galaxy Dark Matter accounts for 90% of the entire mass of the galaxy. Dark Matter is simply that, Dark. As it cannot be seen and has a very weak force. It only interacts with gravity.
How do gravity and dark matter shape the galaxies and affect their environment?
Gravity plays a crucial role in the formation and structure of galaxies by pulling together gas, dust, and dark matter to create stars and stellar systems. Dark matter, which constitutes a significant portion of the universe's mass, exerts gravitational influence, helping to bind galaxies together and affecting their rotation curves. This unseen matter also shapes the large-scale structure of the universe, influencing the distribution of galaxies and galaxy clusters. Ultimately, the interplay of gravity and dark matter not only determines the morphology of individual galaxies but also their interactions and evolution within the cosmic environment.
What is it about dark matter that has scientists saying that eighty five percent of the universe is missing?
Try not to confuse two things that have nothing in common other than their present description having the word "dark" in it. Dark matter is SOME type of matter that interacts with othe matter via gravity, but is not visible to us. It appears to some type of matter that does not interact at all, other than via gravity. What is it? We don't know -- hence the name "dark" matter. Based on the observation of its effect on rotations in galaxies and the bending of light from distant sources, we estimate there is five times more mass in our Universe that is composed of dark matter than the stuff we understand -- stuff we call "baryonic matter" or "luminous matter." Where dark matter exerts a gravitational pull, tending to bring galaxies closer together (or at least slow down the rate at which they are apart from each other), dark ENERGY is something that tends to make galaxies become further apart from each. As best we can tell, it is an inherent proper of empty space itself -- ie, whatever dark energy happens to be, it would exist even where there was no matter whatsoever. Based on the measured ability of dark energy (what EVER it happens to be -- never forget we have NO idea what this stuff even IS) to make entire galaxies move apart from each other, we estimate that the amount of energy in the Universe that is "dark" is much greater than the amount of all other energy -- and that includes all of the mass that is in dark matter! As the pie chart below shows, about 74% of the energy of the Universe is in dark energy, about 22% is the mass in dark matter, about 3.6% is in the mass of gas between galaxies, and a measly 0.4% is in the mass of stars in galaxies. This means we understand only about 5% of our Universe!
