in the neighborhood of 14.5 billion years, from current evidence
that portion of the universe that we can see in principle, given the finite age of the universe
If the age of the universe is equivalent to 1 day, which is 86,400 seconds, then the proportion of mankind's age to the age of the universe is 106 years to 1010 years. Therefore, multiplying 86,400 seconds by 106/1010 will give you the number of seconds mankind would have existed, which is approximately 9,072 seconds.
There is no evidence that the universe has an outer edge. The universe is thought to be spatially infinite, meaning it goes on forever in all directions. Our observable universe is limited by the speed of light and the age of the universe, not by a physical boundary.
The age of the universe goes back to the Big Bang. The Bang resulted in a release of energy in the form of radiation. Due to the expansion of the Universe since that time the original radiation has been red-shifted to the microwave range. The background microwave radiation is the best tool for studying the age of the universe.
As far as I understand, the projected age of the universe is about 99.5% of the estimated "Hubble time". The age is projected by applying a correction factor to the inverse Hubble constant. The correction factor applied depends on the value of the cosmological constant. The constant is derived from WMAP observation data, and valued at 0.976. For a flat universe without cosmological constant, the value would have been 0.666, resulting in a projected age 66.6% of the Hubble time.
The Universe has an age estimated to be about 13.8 billion years.
The universe simply cant expand at 0 acceleration.
that portion of the universe that we can see in principle, given the finite age of the universe
Because that is how old the universe is believed to be
If the age of the universe is equivalent to 1 day, which is 86,400 seconds, then the proportion of mankind's age to the age of the universe is 106 years to 1010 years. Therefore, multiplying 86,400 seconds by 106/1010 will give you the number of seconds mankind would have existed, which is approximately 9,072 seconds.
The universe is 13.7 billion years old & Earth is 4.5 billion years old.
One way scientists use to calculate the age of the universe is by measuring the rate of expansion of the universe since the Big Bang. By studying the cosmic microwave background radiation, astronomers can determine the age of the universe to be about 13.8 billion years.
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.
The age of the universe is inversely proportional to the Hubble constant. A smaller Hubble constant would imply a younger universe, while a larger Hubble constant would suggest an older universe. This relationship is based on the assumption that the expansion rate of the universe has been constant over time.
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.