What is 'dark Matter"?

Answer 1

If this helps at all:
dark matter is hypothetical matter of unknown composition that does not emit or reflect enough electromagnetic radiation to be observed directly, but whose presence can be inferred from gravitational effects on visible matter. According to present observations of structures larger than galaxy-sized as well as Big Bang cosmology, dark matter accounts for the vast majority of mass in the observable universe. Fritz Zwicky used it for the first time to declare the observed phenomena consistent with dark matter observations as the rotational speeds of galaxies and orbital velocities of galaxies in clusters, gravitational lensing of background objects by galaxy clusters such as the Bullet cluster, and the temperature distribution of hot gas in galaxies and clusters of galaxies. Dark matter also plays a central role in structure formation and galaxy evolution, and has measurable effects on the anisotropy of the cosmic microwave background. All these lines of evidence suggest that galaxies, clusters of galaxies, and the universe as a whole contain far more matter than that which interacts with electromagnetic radiation: the remainder is called the "dark matter component".

Answer 2

Science estimates that only 10% of the matter in the universe is observeable, the rest they have labled, dark matter because it does not reflect, or produce, light. Black holes fall into this category. They thought that this dark matter should have enough gravitational force to slow the expansion of the universe, but it has not. Now they theorze that Dark Energy must exist, and it is causing the continuing expansion, but they readily admit that this Dark Energy has not been found and they have no idea as to where it came from if it does exist. This seems like strange theorizing, to me.

Answer 3

Dark Matter is the matter of the universe that is unaccounted for when various atomic and sub-atomic particles are taken into account. In other words, when the weight and dimensions of all known particles are taken into account using a variety of equations, there is more to the Universe than can be accounted for by these particles. Because scientists don't know what actually makes up this missing "stuff" or what it could even be, it is referred to as dark matter. The main proof of dark matter is usually gravity where the pull of a large object like a planet cannot be directly related to the sum of its constituent particles; the planet has more gravity than it should have based on the gravitational force exerted by its known particles.

Answer 4

i like greys, yet ... i assume you do no longer! have you ever seen taupe (or 'greige')? The taupe/greige tones could be very gentle to dark and are literally 'present day'. greater thrilling than beige, warmer than gray. i'm no longer plenty prepared on white partitions, yet have you ever concept a pair of gray-toned white? It purely might artwork on your difficulty. yet another selection may well be a mild purple-gray ... that could %. up on the two the charcoal interior the fixtures and the purple tones interior the acacia ... basically a concept! i like the toned-down green theory ... perhaps the colour representative grew to become into good! bear in mind that the tip effect is what concerns, no longer whether you adore each and each guy or woman shade interior the room. the fairway might play off the reddish tones interior the flooring (purple and green are opposites), whilst the charcoal is a real unbiased. the shortcoming of light is a difficulty ... yet you'll be able to desire to offset that with some 'pops' of white/off-white around the room (toss pillows, artwork, a lampshade) and upload some sparkle with a reflect and/or some upload-ons with a steel end. could desire to you trim the tree? Hahaaaa ... ok, perhaps no longer!

Answer 5

I think Dark Matter / Grey Matter is also part of the brain that is either dead or dying

Answer 6

That's the problem, no one knows exactly. By definition it doesn't reflect radiation/light, so you can't see it. But there's lots of SOMETHING out there with a huge gravitational force.

Answer 7

When the top scientists in the world figure it out im sure they will let you know.

Answer 8

Figure that one out and win the nobel prize...

Answer 9

mostly we only know what it isn't.

it interacts with other matter by gravity, but that's apparently all it does.

Answer 10

It's Deez!