Cosmic Microwave Background: meaning and example
English
Cosmic Microwave Background
Weak radiation that is the remnant heat left over from the Big Bang, filling the observable universe.
“The discovery of the cosmic microwave background provided strong evidence for the Big Bang theory.”
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More words from Astronomy III
Exoplanet
A planet that orbits a star outside the Solar System.
Redshift
The phenomenon where light from an object is increased in wavelength, or shifted to the red end of the spectrum, often used in determining the speed and distance of stars or galaxies.
Event Horizon
A theoretical boundary around a black hole beyond which no light or other radiation can escape.
Dark Matter
A form of matter thought to account for approximately 85% of the matter in the universe, not directly observable as it does not emit or interact with electromagnetic radiation.
Pulsar Wind Nebula
A nebula that is powered by the wind of a pulsar, a highly magnetized, rotating neutron star.
Hawking Radiation
Theoretical radiation predicted to be emitted by black holes, due to quantum effects near the event horizon.
Magnetar
A type of neutron star with an extremely powerful magnetic field.
Gravitational Lensing
The distribution of matter between a distant light source and an observer, capable of bending the light from the source as the light travels towards the observer.
