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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!
What else can I help you with?
Does eighty percent of the energy generated during the catabolism of glucose to carbon dioxide and water occur during glycolysis?
80%
How are diamonds used as a natural resource?
Eighty percent of all diamonds mined are used as industrial diamonds, to improve the cutting and precision of industrial tools.
How do you spelling 181?
One hundred eighty-one.
Where are Hansgrohe showers manufactured?
Hansgrohe products, for the most part, are manufactured in Germany. Eighty percent of the company's production takes place in five plants in the towns of Schiltach and Offenburg, which are located in the south of Germany.
dominance of English?
1. Three-quarters of the world's mail is in English. 2. Eighty percent of the information stored in computers is in the English language. 3. More than half of the world's technical and scientific magazines are in English.
Seventyfive is what percent of eighty?
75 is 54 percent of eighty!!!!!!!!!!!!!!
What is twelve in a half percent of eighty?
10 percent of eighty is 8... 2.5 percent of eight is 2.... 8 + 2 = 10.
In which was about eighty percent of the population engaged in the late 1700s?
In which was about eighty percent of the population engaged in the late 1700s?
How do you write 80 percent in words?
Eighty percent.
Is eighty-three percent more than half of 100?
Yes. Fifty percent would be half of 100, and eighty-three percent is greater than fifty percent.
What is the percent on white dresses for women's weddings?
eighty percent
How do you write .80 percent in word form?
eighty percent
What is eighty- one hundredths as a percent?
It's 81 percent
What is five percent of eighty?
16
What is forty percent of eighty?
32
What is eighty percent as a decimal?
0.80
What is eighty percent of 150000?
120000
