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Planck's view of the cosmic microwave background - annotated

Planck's view of the cosmic microwave background - annotated


Date: 17 July 2018
Satellite: Planck
Depicts: Cosmic Microwave Background
Copyright: ESA/Planck Collaboration

The anisotropies of the cosmic microwave background, or CMB, as observed by ESA's Planck mission.

The CMB is a snapshot of the oldest light in our cosmos, 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.

This image is based on data from the Planck Legacy release, the mission’s final data release, published in July 2018.

Last Update: 1 September 2019
12-Nov-2019 17:56 UT

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