High-energy & quantum cosmology
The Cosmic Neutrino Background
A sea of relic neutrinos released about one second after the Big Bang, when the young Universe became transparent to them — the neutrino analogue of the cosmic microwave background. Its existence is strongly supported by its imprint on primordial element abundances and the microwave background, though the neutrinos themselves are far too low in energy to have been detected directly.
Highlights
- ›Relic neutrinos from one second after the Big Bang
Related physics & astronomy
Knowledge connections
- Associated withThe Neutrino
- Associated withThe Cosmic Microwave Background
- Associated withBig Bang Nucleosynthesis
- Associated withNeutrino Astronomy
Sources
The primary and reference sources this topic draws on.
- NASANational Aeronautics and Space Administration
Mission data, planetary science, space telescopes, and public-domain imagery.
Most NASA-produced imagery is in the public domain; individual items are checked for usage terms before publication.