The age of the Universe is calculated based on several methods; one that is fairly easy to understand is the expansion of the Universe. If you extrapolate the expansive movement of the galaxies into the past, you get to a point where they were very close together. The time when this should have happened gives you a general idea of the age of the Universe - assuming that the speed of expansion didn't change. (This assumption isn't entirely accurate, though.)
The age of the Universe is calculated based on several methods; one that is fairly easy to understand is the expansion of the Universe. If you extrapolate the expansive movement of the galaxies into the past, you get to a point where they were very close together. The time when this should have happened gives you a general idea of the age of the Universe - assuming that the speed of expansion didn't change. (This assumption isn't entirely accurate, though.)
The age of the Universe is calculated based on several methods; one that is fairly easy to understand is the expansion of the Universe. If you extrapolate the expansive movement of the galaxies into the past, you get to a point where they were very close together. The time when this should have happened gives you a general idea of the age of the Universe - assuming that the speed of expansion didn't change. (This assumption isn't entirely accurate, though.)
The age of the Universe is calculated based on several methods; one that is fairly easy to understand is the expansion of the Universe. If you extrapolate the expansive movement of the galaxies into the past, you get to a point where they were very close together. The time when this should have happened gives you a general idea of the age of the Universe - assuming that the speed of expansion didn't change. (This assumption isn't entirely accurate, though.)
The age of the Universe is calculated based on several methods; one that is fairly easy to understand is the expansion of the Universe. If you extrapolate the expansive movement of the galaxies into the past, you get to a point where they were very close together. The time when this should have happened gives you a general idea of the age of the Universe - assuming that the speed of expansion didn't change. (This assumption isn't entirely accurate, though.)
about 13.7 Billion years
The answer depends on the context: percentage of WHAT! For example, the Cenozoic era takes up approx 0% of the age of the universe.
The universe is older than mankind and mankind evolved within the universe. So the universe could not be discovered.
No one on earth knows. The universe hasn't been measured, and we may never reach the ends of the universe, if the universe ever ends.
A sampling universe is what a sample is intended to represent.
The Universe has an age estimated to be about 13.8 billion years.
that portion of the universe that we can see in principle, given the finite age of the universe
9075.6
The universe simply cant expand at 0 acceleration.
Because that is how old the universe is believed to be
The universe is 13.7 billion years old & Earth is 4.5 billion years old.
The universe is roughly 14 billion years old.
Electricity is energy, which is as old as the universe itself.
Of course they aren't. At times, it may have seemed that certain objects in the Universe were older than the Universe, due to wrong estimates about (a) the age of the Universe, or (b) the age of the corresponding objects. But, as more exact calculations become available, these discrepancies are solved. The fact that some objects seemed to be older than the Universe was, precisely, an indication that something was wrong in the age calculations.
They estimate the age of the Universe in more than 12 billion years.
What makes you think it does?
The age of the universe is determined by CMBR, which is left over energy from the Big Bang Theory. CMBR stands for Cosmic Microwave Background Radiation.