away?
2007-08-24 21:06:14 · 17 answers · asked by Anonymous in Science & Mathematics ➔ Astronomy & Space
the light was emitted 14 billion years ago and traveled 14 billion light years. but all that time, space was expanding and the object is now 47 billion light years away.
http://www.astro.ucla.edu/~wright/cosmology_faq.html#DN
2007-08-24 21:15:51 · answer #1 · answered by vorenhutz 7 · 5⤊ 1⤋
Space expands at the speed of light.
The universe is a finite entity so it must have a maximum size.
There is reason to believe that the universe is about 6 billion light years in radius..
An object emitting light from a distance of 6 billion light years would first have to go there then the light come back.
Space precedes any matter so the light emitter would be less than 6 billion light years away.
The universe may be 6 billion light years in radius but it could be much older.
The objects we see at greater distances don't exist to-day.
Some galaxies we see at a distance on 13.5 billion light years went out of existence billions of years ago.
2007-08-25 01:41:55 · answer #2 · answered by Billy Butthead 7 · 0⤊ 1⤋
Light years is the measurement of DISTANCE not TIME, also what the other people have said; since the universe is always expanding this means planets and stars are constantly moving away from us. An object which is 47 billion light years away just means it would take 47 billion years to get to said place travelling at the speed of light which is approximately 300,000,000 m/s (metres per second).
2016-05-17 09:41:10 · answer #3 · answered by ? 3 · 0⤊ 0⤋
we cant, for two reasons, one are equipment is not good enough, and two, the universe is only a maximum of 30 billion light years in diameter. (15 billions years at the speed of light in all direction before someone says otherwise). i think what might have happened here is the different billions problem, an American billion has 9 zeros, and English billion has 12, so what your thinking of might be 0.047 billion in English, which i think is were the 15 billion years came from in the first place.
2007-08-26 11:42:26 · answer #4 · answered by darren p 2 · 0⤊ 1⤋
The light from a galaxy 14 billion years away was emitted when the universe was much smaller. in the time it has taken for the light to reach us, the universe has expanded a great deal, and the galaxy is now much farther than 14 billion ly away.
2007-08-24 21:24:18 · answer #5 · answered by modax42 2 · 2⤊ 1⤋
we cant see 47 billion light years into space, the furtherst we can at the moment is around 3 to 5 billion light years, thats the limit that current technology permits us to see, in a few years we will be able to see much further i hope.
2007-08-25 22:16:26 · answer #6 · answered by awds74 1 · 0⤊ 1⤋
the existence of these stars is 14 billion yrs old..........
but aftr the big bang.
everythng was moving in diffrnt directions........... so eventually......... those stars r still moving and they r in such a position tht the light takes 47 billion yrs to reach us
i hope tht u get the idea here
n everythng is still moving with the same velocity......
actually this might raise the question tht, does it mean that, it for every star other than sun, it is taking more n more time for the light to reach earth?
wat d u think
2007-08-24 22:16:12 · answer #7 · answered by Anonymous · 0⤊ 1⤋
I had not heard the 47 billion year sighting. Where are you reading that info?
Galaxy gazers are in hot competition to find the oldest furthest objects Last I heard was close to 15BYO.
2007-08-24 22:18:50 · answer #8 · answered by ELF Earth Life Form - Aubrey 4 · 0⤊ 1⤋
Where did you read bout seeing an object 47 bly away? That sound implausible. We can only 'see' objects around 15 bly away, max. BTW the estimated max age of the uni is around 20billion years.
2007-08-24 21:17:57 · answer #9 · answered by Anonymous · 2⤊ 0⤋
it's probably a confusion in the meaning of billion - check your facts in terms of powers of ten
2007-08-24 21:15:18 · answer #10 · answered by mesun1408 6 · 0⤊ 0⤋