2006-11-30 04:39:36 · 15 answers · asked by Anonymous in Science & Mathematics ➔ Astronomy & Space
The Big Bang is false. Galactic Red Shift is not due to the motion of galaxies wizzing away from us and the Universe NOT expanding. It's MUCH older than Big Bang estimates of 13.7 billion years. There are stars that are older than 20 billion years, and clusters that are probably closer to 100 billion years. The universe is likely as old as 1 trillion years, and is possibly infinitely old.
2006-11-30 20:29:29 · answer #1 · answered by landru428 2 · 0⤊ 2⤋
OK, OK, we've had our fun...but let's get serious for a moment.
Best guess...about 14 to 15 billion years old; here's why this is the best guess:
First. We have been able to sight cosmic objects (like early galaxies) about 15 billion light years away. Since a light year is the distance light travels in one year, 15 billion light years means the observable universe as we know it has been around for about 15 billion years. These cosmic objects reflect what was there 15 billion years ago because it took that long for the light to reach us here on Earth.
Second: The universe's background temperature has been measured at a fairly steady and homogeneous 3 degrees Kelvin (0 is absolute zero in Kelvin). Some clever physics calculations find that it would have taken about 15 billion years for the universe to cool down to that temperature following the big bang.
There are a couple of other reasons the 14 to 15 billion years old has been commonly accepted, but I've forgotten them at this moment. Go on line and browse, you'll find a lot of stuff about the age of the universe there.
One thing, though, note we are talking about the "observable" universe. There may or may not be something on the other side of what we can observe. And that something may be eternal...who knows?
2006-11-30 13:04:09 · answer #2 · answered by oldprof 7 · 3⤊ 1⤋
There are at least 4 ways that the age of the Universe can be estimated, namely:
The age of the chemical elements.
The age of the oldest star clusters.
The age of the oldest white dwarf stars.
The age of the Universe can also be estimated from a cosmological model based on the Hubble constant and the densities of matter and dark energy as mentioned above. This model-based age is currently 13.7 +/- 0.2 Gyr....that's billions.
As time goes on and more measurements are taken, astronomers are honing that number down to a more exact figure. If you think its 6,000 or 10,000 years old, then you're ready for the loony bin.
2006-11-30 20:56:19 · answer #3 · answered by Its not me Its u 7 · 0⤊ 1⤋
we think it's about 14 billion years, and we're pretty sure. It's using the formula v=Hd in which v is the vlocity galaxies are moving away from us (because the universe is expanding), d is the distance the galaxy is from us.
H is Hubble's constant, and we're not sure on it's EXACT value but we have a pretty good idea. We are getting a more and more accurate value all the time, using more advanced astronomical techniques to find the distance and velocity of millions of galaxies and using this to find H.
So... time=distance/velocity so if we take the age of the universe to be 1/H. And that's about 14 billion (that's the american billion not the british) years.
There are other things we can do like estimating the age of stars and things, they all give us around the same value. At one point we had the value of H slightly wrong, and found stars older than our estimated age of the universe! (Luckily that was corrected!)
2006-11-30 12:59:11 · answer #4 · answered by roberta 3 · 4⤊ 1⤋
The age of the universe from the time of the Big Bang, according to current information provided by NASA is estimated to be about 13.7 billion but that is just a theory nobody know's for sure,people just go on what scientist's say but at the end of the day there just theorys
2006-11-30 13:15:24 · answer #5 · answered by rusty red 4 · 2⤊ 1⤋
No one really knows, some speculate that it's 27 zeros old some say more, others of course say less if you like this kind of stuff i recommend you read this book, The universe in a nut shell, by Stephen Hawkings, This is a great book to start learning and getting some of the answers you have ask your self your whole life ( you got to love facts/Science). The other book I would recommend would be "on the shoulder of Giants" again a Stephen Hawking book. I hope this helps a little, good luck..
2006-11-30 12:48:56 · answer #6 · answered by matt v 3 · 1⤊ 2⤋
Its about 6-8 Billion years
2006-11-30 12:45:11 · answer #7 · answered by Old but Curious 1 · 0⤊ 2⤋
The age of the universe is around 13 billion years. That's based on precise measurements of the cosmic background radiation.
2006-11-30 12:48:06 · answer #8 · answered by Gene 7 · 2⤊ 2⤋
The answer is simply 14.2938 billion years old. If you think it's only 10,000 years old... you might need to get your brain examined. There is evidence that proves your theory wrong with the HR diagram of Stars.... Our sun is proof enough.
2006-11-30 14:26:19 · answer #9 · answered by NoMercy 1 · 1⤊ 1⤋
The universe came into existence 13.7 billion yrs ago, space, time, energy + matter.
2006-11-30 14:35:02 · answer #10 · answered by CLIVE C 3 · 1⤊ 1⤋