age of the universe
Everything's total duration
The age of the universe refers to the time elapsed since the Big Bang, the event that cosmologists believe initiated the expansion of space and matter.
Current scientific consensus, based on observations of cosmic microwave background radiation and the expansion rate of galaxies, places this age at approximately 13.8 billion years.
The age of the universe keeps getting refined as measurement techniques improve.
The concept is fundamental to cosmology and helps constrain theories about how galaxies, stars, and planets formed.
- singularityPoint where values explode
- dark energyForce accelerating universal expansion
- redshiftWavelength stretch from recession
- big bangLoud explosive noise
- cosmologyStudy of universal structure
deep time · evolution · dark matter · general relativity · existential questions · subatomic particles · creation myths · heat death · Cepheid variables · radiometric dating · intergalactic space · parsecs · light years · oldest · gravitational lensing · billions · eternal · cosmogony
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