Why do astronomers measure universe´s age if the time is relative?

Question

In my little knowledge, the space matter always moves but, if it
moves quickly or slowly, oldens fastly or not depending upon the theory of the relativity, so, it depends only on physicist to
define the time of the universe, but , why do astronomers keep on saying that the the existence began 13000 earthly years ago?

Answer 1

The age of the universe has nothing to do with time being relative. You got the concept wrong. If someone asks you your age, you're going to give one answer, you can give the answer in different ways, but they'll all equal the same thing.

When we talk about relative time, we are talking about two observers moving relative to each other and each reading clocks differently (assuming they're moving at relativistic speeds).

And by the way it is more than 13 billion years old, not 13 thousand.

Answer 2

The measurements are made based on unproven theory that is not fact. we have accepted Einsteins theory as fact..but it is still theory and remains unproven.
Time doesn't exist..it only exists for us on earth because we are traveling at sub light speed. As soon as we hit light speed , there is no more time..it stops. Time is created because we are moving slower than light and we live in that reality.
We will never really know the real age of the universe based on theory, it is only an assumption.
As far as 13,000 years ago goes, our solar system lined up with the core of the galaxy as it passed through the plane of the ecliptic and caused a mass extinction here on earth, but our existence did not start then. Some have survived the last extinction and that is why we are still here today.
Time is relative because it is based on our speed relative to the observer. There is still debate on whether or not the speed of light is a constant.
Bottom line: There is no time.. only time created relative to the speed of light.

Answer 3

Astronomers estimate that the large Bang got here about between 10 and 20 billion years in the past. They estimate the age of the Universe in 2 thoughts: (a) through searching for the oldest stars; and (b) through measuring the speed of enlargement of the Universe and extrapolating back to the large Bang. The Wilkinson Microwave Anisotropy Probe (WMAP) is a NASA Explorer project that released June 2001 to make basic measurements of cosmology -- the study of the houses of our universe as an finished. WMAP has been stunningly powerful, generating our new time-honored type of Cosmology. WMAP maintains to collect intense-high quality medical records. the article will cram if I position it the following. Please click the hyperlinks decrease than for added info. wish this permits.

Answer 4

Because all the speeds that make time really relative are much faster than anything material in the universe actually moves, so the time dialation effect is minimal/irrelavant.
Just as Newton's laws of gravity work fine until you want to measure things to tiny, tiny fractions of a second or speed atomic particles. They are not absolutely correct, but they are good enough for daily use.
And actually, they don't say 13,000 earthly years ago, they say 4,000,000,000 (4 billion) years ago.

Answer 5

You just answered your own question. We are measuring the universe's time, relative to our own "earthly years". Ask any genealogist - everyone is relative.

Answer 6

Actually 13.7 billion years is how old scientists think the Universe is.