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the expansion of the universe is never ending, and is actually speeding further away today than ever. why?

2006-09-09 12:00:04 · 23 answers · asked by ken260470 2 in Science & Mathematics Astronomy & Space

23 answers

How the Universe Will End
Scientists think they know how the universe began, but what happens at the other end of the space—time continuum was a deep, dark mystery—until now

For those who live in a city or near one, the night sky isn't much to look at—just a few scattered stars in a smoggy, washed-out, light-polluted expanse. In rural Maine, though, or the desert Southwest or the high mountains of Hawaii, the view is quite different. Even without a telescope, you can see thousands of stars twinkling in shades of blue, red and yellow-white, with the broad Milky Way cutting a ghostly swath from one horizon to the other. No wonder our ancient ancestors peered up into the heavens with awe and reverence; it's easy to imagine gods and mythical heroes inhabiting such a luminous realm.

Yet for all the magnificence of the visible stars, astronomers know they are only the first shimmering veil in a cosmos vast beyond imagination. Armed with ever more powerful telescopes, these explorers of time and space have learned that the Milky Way is a huge, whirling pinwheel made of 100 billion or more stars; that tens of billions of other galaxies lie beyond its edges; and, most astonishing of all, that these galaxies are rushing headlong away from one another in the aftermath of an explosive cataclysm known as the Big Bang.

2006-09-10 01:52:53 · answer #1 · answered by Anonymous · 0 0

An important open question of cosmology is the shape of the universe. Mathematically, which 3-manifold represents best the spatial part of the universe?

Firstly, whether the universe is spatially flat, i.e. whether the rules of Euclidean geometry are valid on the largest scales, is unknown. Currently, most cosmologists believe that the observable universe is very nearly spatially flat, with local wrinkles where massive objects distort spacetime, just as the surface of a lake is nearly flat. This opinion was strengthened by the latest data from WMAP, looking at "acoustic oscillations" in the cosmic microwave background radiation temperature variations.

Secondly, whether the universe is multiply connected, is unknown. The universe has no spatial boundary according to the standard Big Bang model, but nevertheless may be spatially finite (compact). This can be understood using a two-dimensional analogy: the surface of a sphere has no edge, but nonetheless has a finite area. It is a two-dimensional surface with constant curvature in a third dimension. The 3-sphere is a three-dimensional equivalent in which all three dimensions are constantly curved in a fourth.

If the universe is indeed spatially finite, as described, then traveling in a "straight" line, in any given direction, would theoretically cause one to eventually arrive back at the starting point.

Strictly speaking, we should call the stars and galaxies "views" of stars and galaxies, since it is possible that the universe is multiply-connected and sufficiently small (and of an appropriate, perhaps complex, shape) that we can see once or several times around it in various, and perhaps all, directions. (Think of a house of mirrors.) If so, the actual number of physically distinct stars and galaxies would be smaller than currently accounted. Although this possibility has not been ruled out, the results of the latest cosmic microwave background research make this appear very unlikely

2006-09-09 12:05:09 · answer #2 · answered by {««мα∂gυу»»} 2 · 0 0

According to a 2004 article in New Scientist the radius of the observable universe is 46 billion light years (and its diameter is therefore 92 billion light years).

More recently, that has been revised upwards to 78 billion light years and 156 billion light years, respectively,

Either way, pretty big, huh? But not infinite,

NB This is the observable universe, There may be more of it that we cannot see or know about. That remains a speculation, which we can neither prove nor disprove.

These numbers are hard to visualise, Maybe I should just stick to Waltzing asteroid 253 Mathilde?

2006-09-09 15:37:12 · answer #3 · answered by Anonymous · 0 0

Everything that had a begin will have an end. So Universe will end someday... scientist evaluated the end of our solar system in a far future of about 6 billions years from now. But the end of the Universe is not possible yet to evaluate as it was done with the sun.

2006-09-09 12:07:54 · answer #4 · answered by vahucel 6 · 0 0

How do you know that it is speeding further away then ever? name your sources.

But yes, the universe is expanding. If the universe is a sphere of space, and if we can determine our position from the centre of the universe, we can get an accurate measurement. what is at the centre of the universe anyway? isn't that the core of the explosion that created the universe in the first place? and i speaking science fiction?

2006-09-09 12:08:41 · answer #5 · answered by Stroopwafel 2 · 0 0

Atleast 14 billion light years away.


And uh, why? Who knows. It's thought dark matter is causing a negative push which is causing the universal expansion to accelerate.

2006-09-09 13:24:28 · answer #6 · answered by Anonymous · 0 0

its so far that if you were to race past the expansion of the universe you would age 1 year every second.

2006-09-09 16:06:38 · answer #7 · answered by jimtheglassmaster 2 · 0 0

how far is the end of the universe? actually it woks vice versa it is also equall to distance from the end of the universe to where are you right now. Please specify base point when measuring, Just kidding it's speeding away just like human mind continously developing and growing.

2006-09-10 01:32:01 · answer #8 · answered by richbin 2 · 0 0

Not as far as you might think. It's supposed to be shrinking. What's outside the Universe though? How can we know? Do we care? Let's look after the people on this planet first.

2006-09-09 12:33:05 · answer #9 · answered by Dorita 2 · 0 0

The universe expanding due to remains of 'The Big Bang' so there is no end to the universe.

2006-09-09 21:15:10 · answer #10 · answered by Syphcis 2 · 0 0

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