4. Measurement of the Cosmic Temperature Independently
Found Year: 2004
Who Discovered It: Several writers
The vicinity of the Cosmos
The Absolute Radiometer For Cosmology, Astrophysics, And Diffuse Emission, or ARCADE, is the instrument used to measure the microwave level background of the cosmos. It compares the sky to external full-aperture calibrators using narrowband cryogenic radiometers.
Independent Measurement of the Cosmic Temperature ©NASA photos/Shutterstock
With its unique open-aperture design, ARCADE is able to take measurements more precisely than its predecessors since it does not have any windows or other potentially heated objects between its antenna and the sky.
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