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The difficulty is in estimating the distance to the furthest galaxies.
Before the discovery that nearly all galaxies beyond the Local Group were moving away from us (by analyzing the red shift in their spectra) it was assumed the Universe was ageless.
However, by determining that the furthest galaxies were moving fastest away from us, Astronomers extrapolated backwards to arrive at the presently estimated time period - 13.7 billion years (when everything would have started in one spot).
However, calculating the actual distance to other galaxies is very difficult. For nearer galaxies, stars known as Cepheid Variables (whose absolute brightness is directly correlated to their period of variability) can be used to accurately estimate the distance to those galaxies.
However, Astronomers must rely upon less well understood phenomena to calculate distances, and without that precise measuring stick, the exact age of the Universe cannot be determined.
What else can I help you with?
How old do scientists think the universe?
They estimate the age of the Universe in more than 12 billion years.
How many billion of years old is the universe according to scientists?
14 billion
How old do Scientists think that your universe is?
Scientists estimate that the universe is approximately 13.8 billion years old based on observations of the cosmic microwave background radiation and the expansion rate of the universe. This age is derived from various cosmological models and theories, such as the Big Bang theory.
What is the name given to scientists who study the universe?
Scientists who study the universe are known as cosmologists.
Describe Two ways scientists calculate the age of the universe?
By measuring the rate of expansion of the universe using the Hubble constant and then calculating backwards to determine when the universe started expanding, scientists can estimate the age of the universe. By studying the cosmic microwave background radiation left over from the Big Bang, scientists can infer the age of the universe by measuring the temperature fluctuations and using them to determine the time since the universe began.
Is this universe asymmetrical?
Now it is considered by most scientists that the universe is asymmetrical.
How can scientists calculate the age of the universe using red shift?
Scientists use the red shift of light from distant galaxies to measure their distance from us. By measuring the rate of expansion of the universe using red shift data, scientists can calculate the age of the universe, known as the Hubble time, which is currently estimated to be around 13.8 billion years.
Why do scientists seek to discover new laws if the universe?
Scientists seek to discover new laws of the universe in order to expand our understanding of the natural world, improve technology, and make predictions about future phenomena. By uncovering these laws, scientists can better explain the behavior of the universe and potentially solve complex problems facing society.
How many scientists agreed that ALLAH is the creator of universe?
Scientist is a vague term and covers a large group of people so it would be difficult to give a number. However it is certain that all Muslim scientists believe this to be true.
Do scientists think that the universe is expanding?
Yes
Where do scientists believe wormholes exist in the universe?
Scientists believe that wormholes may exist in the universe, potentially connecting different points in space and time.
Can you use universe in a sentence?
The universe is a vast and mysterious place that never ceases to amaze astronomers and scientists.
