The Bruce Murray Space Image Library
An Echo of the Big Bang
Filed under astronomy and astrophysics spacecraft, astronomy
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.
ESA and the Planck Collaboration - D. Ducros
This image is in the public domain.
Original image data dated on or about March 21, 2013
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