If the space among galaxies is being stretched why can’t the gravitational force among them affect it somehow?
2007-02-01 20:01:50 · 10 answers · asked by Anonymous in Science & Mathematics ➔ Astronomy & Space
there are,two scenarios mapped out for the long term fate of the Universe.
1, gravity might slow down the expansion of our Universe so that it coasts to a stop and possibly even collapses back down into a big crunch.
2, the expansion of the Universe could continue indefinitely thanks to the acceleration of dark energy
From what we know now,expansion of the Universe was not slowing down either dramatically or even gradually, under the gravity of the matter in the Universe, but rather, it was speeding up
The most popular way to account for this newfound acceleration is thru einstein’s cosmological constant. This dark energy exerts a strong negative pressure that counters the inward pull of gravity. In order to match the rate of expansion, the unexplained dark energy must account for two-thirds of the total energy content of the universe.
2007-02-01 20:40:40 · answer #1 · answered by Tharu 3 · 0⤊ 0⤋
That has been a longstanding question among scientists until the Hubble telescope found in 1997 that the expansion rate of the universe is accellerating, not decellerating because of gravity. It's because (so they say) dark energy is 70% of the universe's makeup, and dark energy has negative gravity, so it overpowers the positive gravity.
2007-02-01 20:15:41 · answer #2 · answered by Anonymous · 1⤊ 0⤋
It is now believed that there are 11 dimensions. When the Big Bang happened - the first thing that was created was matter and anti-matter (called smatter). We live in 4 dimensions (height, width, depth, and time/space) We cannot relate to the other 7 dimensions in the sense we relate to our 4 dimensions. Almost all of the smatter went into one of the other 7 dimensions. Almost all the gravity went into yet another dimension. If the smatter was in our dimensions, everything would annihilate itself. If all of the gravity was within our dimensions, the universe would collapse itself into what is call the Big Crunch.
2007-02-01 20:22:18 · answer #3 · answered by Anonymous · 1⤊ 1⤋
because the gravitational pull of objects is relative to what it is near. Every year we get closer to the sun while planets by pluto are moving outward. There are what i call gravity zones in the universe. The universe IS expanding but its just moving outward in packs i.e. solar systems, but still all at the same rate.
2007-02-01 20:11:53 · answer #4 · answered by Chrishan D 1 · 1⤊ 1⤋
11 Dimensions?
Dark matter?
"...dark energy is 70% of the universe's makeup, and dark energy has negative gravity, so it overpowers the positive gravity."
Big Bang? A large explosion did all of this?
...and what I believe takes faith???
2007-02-03 18:25:00 · answer #5 · answered by rhemus1973 1 · 0⤊ 0⤋
There's little doubt that it does. BUt nobody knows exactly how *much* it slows expansion. it's all down to the Hubble Constant and, possibly, the research being done now on 'Dark Matter' (Google for definitions of those)
Doug
2007-02-01 20:09:51 · answer #6 · answered by doug_donaghue 7 · 1⤊ 1⤋
after the big bang the whole universe is expanding.the speed of expansion is increasing day by day
2007-02-01 22:03:53 · answer #7 · answered by Anonymous · 1⤊ 0⤋
in theory gravity is the attraction masses and matter expanding outwards has mass. so yeah gravity should have an effect on it. but then you can argue entopy...
2007-02-01 20:23:48 · answer #8 · answered by trevathecleva 2 · 1⤊ 0⤋
Because of your very lickable avatar I find it hard to concentrate on your questions and answer correctly........(drooling)
2007-02-01 20:09:09 · answer #9 · answered by Anonymous · 1⤊ 0⤋
It depends if you are talking about sex or astronomy!
It is very hard to think about your question when you.......
2007-02-01 20:15:42 · answer #10 · answered by Anonymous · 1⤊ 0⤋