My question is about the expanding universe.Alot of scientists have compare the expanding universe like a ballom that is being blow up.now with the ballon there is an appossing force that presses againts the ballon.So my question is with the expaning universe is there a force thats pushing back against the expanding universe?
2006-09-15 17:34:04 · 11 answers · asked by neutrinoman2 1 in Science & Mathematics ➔ Astronomy & Space
The balloon / universe analogy is just that...an analogy. It is NOT a literal description of universal expansion. Furthermore, there does not appear to be any "opposing force" that is slowing down universal expansion. On the contrary, some as yet unknown feature of the universe is causing its expansion rate to increase.
2006-09-15 18:15:01 · answer #1 · answered by Chug-a-Lug 7 · 0⤊ 1⤋
Not only can we observe the Universe expanding, ie the galaxies are traveling further away from a center, but the speed is increasing. The background radiation, the 'red' shift of light, and the temperature so elequently mentioned above are all evidence of the expanding universe. No one knows if its expandnig into infinity or will end in the Big Crunch....ie, fall back into itself.
What came before the Horrendous Kablooie and what will come after the expansion reaches its limit....all eternal and unanswerable questions.
2006-09-15 19:00:36 · answer #2 · answered by Its not me Its u 7 · 0⤊ 0⤋
After the Big Bang the universe has been expanding ever since. At first scientist believe that the universe was infinite but soon discovered it was still expanding. How did they find out? Absolute Zero is -273 degrees celsius or -459 degrees fahrenheit. Where the universe is still expanding the degree is just above the Absolute Zero temperate.
Absolute Zero temperature is where the temperature can not go any colder. This is because atoms vibrate but at the temperature Absolute Zero the atoms do not vibrate anymore.
2006-09-15 17:41:51 · answer #3 · answered by kaeleymel 3 · 0⤊ 0⤋
The baloon is expanding into "nothingness" [this is not vacuum, vacuum is only inside this baloon]
By default the matter is attracted to each other and before bigbang all the matter was just the size of a football. But "something" caused it to explode,
+ this explosion causes outward-force
+ the matter attracting each other causes the inward-force. Now this you can consider as the "pushing back" force. But the "nothingness" that lies outside the baloon does not really exert any force.
Hope this helps....
2006-09-15 21:11:43 · answer #4 · answered by Anonymous · 0⤊ 0⤋
the universe is four-dimensional, but if you can imagine a two-dimensional version then it seems to be something like the surface of a sphere. nothing inside or outside the surface of a sphere exists for the surface. to quote a dead writer, "there's no there, there". the universe is of finite size yet it has no center and no edge.
after an extremely brief super-fast expansion before the universe was a tiny fraction of a second old, the expansion began to decelerate, but beginning about five billion years ago began to accelerate and has now getting faster, not slower.
look here:
http://www.sciam.com/print_version.cfm?articleID=0009F0CA-C523-1213-852383414B7F0147
http://universeadventure.org/
http://en.wikipedia.org/wiki/Physical_cosmology
http://www.astro.ucla.edu/~wright/cosmo_01.htm
2006-09-15 17:47:45 · answer #5 · answered by warm soapy water 5 · 0⤊ 0⤋
The Big Bang theory:
--------------------------------------------------------------------------------------------------------
The Big Bang Theory is the dominant scientific theory about the origin of the universe. According to the big bang, the universe was created sometime between 10 billion and 20 billion years ago from a cosmic explosion that hurled matter and in all directions.
In 1927, the Belgian priest Georges Lemaître was the first to propose that the universe began with the explosion of a primeval atom. His proposal came after observing the red shift in distant nebulas by astronomers to a model of the universe based on relativity. Years later, Edwin Hubble found experimental evidence to help justify Lemaître's theory. He found that distant galaxies in every direction are going away from us with speeds proportional to their distance.
The big bang was initially suggested because it explains why distant galaxies are traveling away from us at great speeds. The theory also predicts the existence of cosmic background radiation (the glow left over from the explosion itself). The Big Bang Theory received its strongest confirmation when this radiation was discovered in 1964 by Arno Penzias and Robert Wilson, who later won the Nobel Prize for this discovery.
Although the Big Bang Theory is widely accepted, it probably will never be proved; consequentially, leaving a number of tough, unanswered questions.
--------------------------------------------------------------------------------------------------------
2006-09-15 18:19:47 · answer #6 · answered by Nice Friend! 2 · 1⤊ 0⤋
Gravity.
The balloon isn't the same expansion in all respects... you are supposed to take the SURFACE of the balloon as a 2-D representation of space... not considering the 3rd dimention that the balloon actually expands in.
2006-09-15 17:38:53 · answer #7 · answered by iMi 4 · 0⤊ 0⤋
I am always wandering why did the scientists restrict the universe to what they can see.
If the universe is like a balloon, then what is beyond the balloon.
2006-09-15 18:04:08 · answer #8 · answered by cybtrker 3 · 0⤊ 0⤋
The universe isn't expanding, it is just some moronic phillosophy that some "scientists" latch on to in hope of making sense of some things.
2006-09-15 17:42:14 · answer #9 · answered by the Benny Bossy Klan 3 · 0⤊ 2⤋
Nope
2006-09-15 18:09:23 · answer #10 · answered by Anonymous · 0⤊ 1⤋