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Chewz
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I may be simplifying but if the universe is spacetime and time is local how can you define a time elapsed from the big bang for the whole Universe?
The current estimated age of the Universe is approximately 13.8 billion years old. This age is determined using various methods such as measuring the expansion rate of the Universe and studying the oldest objects in the Universe.
The Big Bang is believed to have occurred approximately 13.8 billion years ago. However, the exact moment of the Big Bang is still unknown and is a topic of ongoing research and debate among scientists.
Scientists use various methods such as measuring the cosmic microwave background radiation, studying the expansion rate of the Universe, and analyzing the oldest objects in the Universe (such as globular clusters and white dwarf stars) to estimate the age of the Universe.
No, the age of the Universe is not constant. It has been changing since the Big Bang due to the expansion of the Universe. As the Universe expands, time also expands, meaning that the age of the Universe is continuously increasing.
No, the age of the Universe cannot be determined with 100% accuracy. Scientists use the best available data and methods to estimate the age, but there is always a margin of error and room for improvement in our understanding of the Universe's origins and evolution.