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Astronomers have detected remnants of the Big Bang, known as Cosmic Microwave Background (CMB) radiation. This radiation is in the form of microwaves and was emitted shortly after the Big Bang began the expansion of the universe. CMB radiation gives astronomers insight into the origins of the universe and its structures.
You must attribute the author and the source, when using this image. Copy the attribution details below and include them on your project or website.