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Gallery: ESA Planck Observatory

Seeing the big bang

Related BOWN Article: ESA Planck Observatory

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Planck Observatory Image 1

Launched along with the Herschel Space Observatory in May, the European Space Agency's Planck Observatory will study the radiation left over from the first 370,000 years after the big bang--known as the cosmic microwave background, or CMB--with three times the sharpness of previous satellites.

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Planck Observatory Image 2

To detect the temperature differences in the CMB as small as millionths of a degree (the equivalent of detecting the body heat of a rabbit on the moon, from Earth), Planck uses two devices, one for high frequencies and one for low.

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