cosmic microwave background

Cultural  

1. The microwave radiation that arrives at the Earth from every direction in space. The detection of this radiation played an important role in acceptance of the Big Bang theory.

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This radiation is sometimes referred to as the “echo” of the Big Bang.

Example Sentences

However, interest in evolving dark energy was vigorously rekindled last year from the combination of supernovae, baryon acoustic oscillation, and cosmic microwave background data from the DES, DESI, and Planck experiments.

From Science Daily

They’ve measured the cosmic microwave background, or leftover radiation from the Big Bang, with extremely high precision to help paint a picture of the first nanoseconds of the universe.

From Salon

Throughout the decades, numerous observations of how dust, gas, and ripples in the cosmic microwave background, or the leftover radiation from the primordial plasma of the universe, moved indicated that dark matter exists.

From Salon

The second method, called the early relic method, involves measuring the leftover light from the Big Bang in what is called the cosmic microwave background.

From Salon

For example, scientists have already compared the new quasar map with the oldest light in our cosmos, the cosmic microwave background.

From Science Daily