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When the total amount of mass in a galaxy is computed, and the total amount of gravity is calculated there is a discrepancy. There appears to be more matter in the galaxy than what can be observed. Dark matter was theorized as being matter that exists but does not interact with electromagnetic radiation. Because of this, it cannot be seen. That is why it is called dark matter.
What else can I help you with?
Dark matter is detected because it?
Dark matter can be detected because it got gravity.
How are stars dust and gas similar to dark matter?
The only similarity we know of is that they all seem to interact with gravity. Aside from that, scientists do not know what dark matter is.
Since gravity cannot be seen is it Dark Matter?
If you suspect that something invisible may actually be dark matter,then you should also be considering-- sound-- microwaves-- heat-- honesty-- weight-- faith-- electric current-- courage..etc.In short: No, gravity is not dark matter. It's not matter of any kind. It's one ofthe four fundamental forces in the universe. Gravitons, the hypothetical gaugeparticles of gravity, might be dark matter except that one of the things we knowabout them is that if they exist, they're massless.
If there is no dark matter in the Milky Way Galaxy what is the best alternative explanation for the observations?
If there is no dark matter in the Milky Way Galaxy, one alternative explanation for the observations could be modifications to the theory of gravity, such as MOND (Modified Newtonian Dynamics). MOND proposes that gravity behaves differently on large scales than predicted by Newtonian physics, potentially explaining the observed phenomena without the need for dark matter.
What is dark matter in the big bang theory?
Dark matter is matter that does not interact via the electromagnetic force. We don't really know what dark matter is, exactly; there are several possibilities. We know that it interacts via gravity, meaning it has mass. It may, or may not, or SOME of it may, interact via the weak force as well.
Is gravity dark matter?
Gravity is not matter (dark or light), it is a property of mass and space that results in forces. Matter and force are entirely different things.
Dark matter is detected because it?
Dark matter can be detected because it got gravity.
How does a black hole gobble dark matter?
Not much is known about dark matter, but pressumably, it would react to gravity just like normal matter.
How do atronomers detect dark matter?
Gravity. We cannot see or directly detect "dark matter", and the only reason why astronomers talk about "dark matter" is that galaxies like the Milky Way appear to be spinning too fast for gravity to hold them together. Or at least, for the gravity of the mass that we can SEE to hold them together. Gravity comes from matter, and we can't see enough matter, so it must be "dark matter". This may be in the form of trillions of invisibly-dim brown dwarf stars, or in black holes from which no light ever escapes - or it may be something entirely new. "Dark matter" is the something new.
Where do you get the dark matter?
Dark matter is all around us, inside and out, is what holds the forces of gravity together, keeps it from flying apart.
If gravity and acceleration are the same how do we know dark matter isn't dark acceleration?
Gravity and acceleration are definitely NOT the same. Gravity and acceleration can have the same EFFECTS.Dark matter is some unknown substance, which provides gravitational attraction. As a result, just like any regular matter, it will accelerate any nearby matter. But calling it "dark acceleration" doesn't really solve the mystery of what it's made of.
What two forces determine if a universe will expand or not expand?
The expansion or contraction of the universe is determined by the balance between the force of gravity (tending to pull matter together) and the force of expansion due to dark energy (driving matter apart). If dark energy dominates, the universe will expand; if gravity dominates, the universe will contract.
When some Gnostics speak of the interaction between anti-matter and matter are they actually speaking of the interaction between dark matter and matter?
No. Antimatter and dark matter are two entirely different things. Dark matter is a form of matter (for lack of a better word) that only interacts with ordinary matter via gravity. Antimatter is matter consisting of antiparticles. For every normal particle type there is an antiparticle of the same mass but opposite charge. If a particle meets its antiparticle the two annihilate each other and turn into energy.
Littlebigplanet dark matter what is it?
Dark matter and Light matter. They are tweakable, anti-gravity materials. Dark matter and light matter have the same effects but just look different. Very useful for creating floating platforms so it is best to use them in a platformer.
How are stars dust and gas similar to dark matter?
The only similarity we know of is that they all seem to interact with gravity. Aside from that, scientists do not know what dark matter is.
What is the connection between magnetism and dark matter?
Not much is known about dark matter, but it is believed to interact with normal matter ONLY or ALMOST EXCLUSIVELY through gravitation; its interaction through the other forces (electric and magnetic forces, the strong force, the weak force) should be inexistent, or insignificant.
Are all black holes made of dark matter?
No, dark matter is quite a different kind of thing. A dark hole may have absorbed some dark matter, but pressumably that would become indistinguishable from the normal matter, once it gets crushed by the enormous gravity of the black hole.
