dark matter and dark energy and debris
2006-11-20 21:00:29
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answer #1
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answered by Anonymous
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We cannot be sure of what the universe is made of, we can only have a general answer cause theories are made by humans and we are only looking at a very very small percentage of the universe and hence we cannot be sure. According to some studies of the universe, it is made up of huge amount of gases, lots of space (scientists believe that the universe is expanding all the time as pictures shows us that the shape of constellations changes over time and that stars seems to move away from each other) and rocks and many more. From what we know, planets may be either formed from gases or from rocks.
2006-11-20 21:24:07
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answer #2
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answered by Me'Shell 1
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The Universe is made up of Atoms
2006-11-20 22:56:26
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answer #3
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answered by Santhosh S 5
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Protons, Neutrons and Electrons: The Stuff of Life
You, this computer, the air we breathe, and the distant stars are all made up of protons, neutrons and electrons. Protons and neutrons are bound together into nuclei and atoms are nuclei surrounded by a full complement of electrons. Hydrogen is composed of one proton and one electron. Helium is composed of two protons, two neutrons and two electrons. Carbon is composed of six protons, six neutrons and six electrons. Heavier elements, such as iron, lead and uranium, contain even larger numbers of protons, neutrons and electrons. Astronomers like to call all material made up of protons, neutrons and electrons "baryonic matter".
Until about twenty years ago, astronomers thought that the universe was composed almost entirely of this "baryonic matter", ordinary stuff. However, in the past decade, there has been ever more evidence accumulating that suggests there is something in the universe that we can not see, perhaps some new form of matter.
The Dark Matter Mystery
By measuring the motions of stars and gas, astronomers can "weigh" galaxies. In our own solar system, we can use the velocity of the Earth around the Sun to measure the Sun's mass. The Earth moves around the Sun at 30 kilometers per second (roughly sixty thousand miles per hour). If the Sun were four times more massive, then the Earth would need to move around the Sun at 60 kilometers per second in order for it to stay on its orbit. The Sun moves around the Milky Way at 225 kilometers per second. We can use this velocity (and the velocity of other stars) to measure the mass of our Galaxy. Similarly, radio and optical observations of gas and stars in distant galaxies enable astronomers to determine the distribution of mass in these systems.
The mass that astronomers infer for galaxies including our own is roughly ten times larger than the mass that can be associated with stars, gas and dust in a Galaxy. This mass discrepancy has been confirmed by observations of gravitational lensing, the bending of light predicted by Einstein's theory of general relativity.
2006-11-20 21:08:29
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answer #4
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answered by Basement Bob 6
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The universe is made up of space,
Every thing that we see and experience is a manifestation of space!
2006-11-21 00:41:20
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answer #5
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answered by Billy Butthead 7
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the universe is made up of a system of planets & stars,galaxies,nebulas,black holes,white holes,etc.the expanse of the universe is approximately 10 to the power of 51meters that is 1 followed by 51 zeroes!
2006-11-20 21:03:02
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answer #6
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answered by manu 2
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Believe it or not, the Universe is mostly empty space, with a few astronomical events thrown in here and there.
2006-11-20 21:00:40
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answer #7
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answered by Anonymous
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Quanta, protons, neutrons and electrons
2006-11-20 22:42:51
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answer #8
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answered by Taurus 5
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you just now discovered a curiosity about the great big place you dwell in?
2006-11-20 21:05:51
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answer #9
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answered by Moony 1
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Everything you see feel touch and also don't know
2006-11-20 22:46:05
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answer #10
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answered by mich01 3
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