image 22-October-2017 06:44:06

Cosmic microwave background seen by Planck

Date: 21 March 2013
Satellite: Planck
Depicts: Cosmic Microwave Background
Copyright: ESA, Planck Collaboration

The anisotropies of the Cosmic Microwave Background (CMB) as observed by Planck. The CMB is a snapshot of the oldest light in our Universe, imprinted on the sky when the Universe was just 380 000 years old. It shows tiny temperature fluctuations that correspond to regions of slightly different densities, representing the seeds of all future structure: the stars and galaxies of today.

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Last Update: 17 December 2013

For further information please contact: SciTech.editorial@esa.int

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