PaperCup
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The universe is estimated to be approximately 13.8 billion years old.
Scientists have reached this conclusion using two main methods:
Cosmic Microwave Background (CMB): By studying the oldest light in the universe—the afterglow of the Big Bang—missions like NASA's WMAP and ESA's Planck have calculated this age with high precision (around 13.77 to 13.8 billion years).
Expansion Rate (Hubble Constant): By measuring how fast galaxies are moving away from us, astronomers can "rewind" the expansion of the universe to find the starting point.
While 13.8 billion years is the widely accepted consensus, some modern studies occasionally suggest slight variations as we refine our understanding of dark energy and cosmic expansion.
Scientists have reached this conclusion using two main methods:
Cosmic Microwave Background (CMB): By studying the oldest light in the universe—the afterglow of the Big Bang—missions like NASA's WMAP and ESA's Planck have calculated this age with high precision (around 13.77 to 13.8 billion years).
Expansion Rate (Hubble Constant): By measuring how fast galaxies are moving away from us, astronomers can "rewind" the expansion of the universe to find the starting point.
While 13.8 billion years is the widely accepted consensus, some modern studies occasionally suggest slight variations as we refine our understanding of dark energy and cosmic expansion.
