How many years ago was the big bang?
Subject : Physics
Question: How many years ago was the big bang?
Expert Verified Solution:
The Big Bang, which marks the origin of the universe, occurred approximately 13.8 billion years ago. This estimate is based on measurements of the cosmic microwave background radiation and observations of the expansion rate of the universe, known as the Hubble constant. The 13.8 billion-year figure has been refined by data from the Planck satellite, which provided detailed measurements of the CMB and improved our understanding of the universe’s age. For further reference, you can consult the Planck Collaboration’s findings and related scientific literature, which offer detailed analyses supporting this age estimate.
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