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If the universe is 13.7 Billion years old, how could the univere have a radius any longer than 13.7 Billion light years?
DaveC426913 said:...The farthest are moving away from us at speeds faster than light. These galaxies are beyond the boundary of the observable universe, and are, in every useful way, cut off from us forever.
jazzdude9792 said:Correct me if I'm wrong but what you are dealing with is the boundaries of the universe populated with planets. Technically, wouldn't it be safe to say that the universe with both planets and not with planets would end up being an infinite number of light years?
The observable universe is estimated to have a radius of 46 billion light years. However, the actual size of the entire universe is still unknown and may be much larger.
The universe is approximately 13.7 billion years old, based on observations from the cosmic microwave background radiation.
Scientists use various methods, such as measuring the distance to celestial objects and studying the expansion rate of the universe, to estimate the size of the universe.
The size of the universe plays a significant role in our understanding of its evolution, composition, and overall structure. It also helps us to comprehend the vastness and complexity of the universe.
The size of the observable universe has expanded over time due to the ongoing expansion of the universe. However, the overall size of the entire universe may remain constant or even increase due to unknown factors such as dark energy.