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Simulation of cosmic ray background, as Planck would see it
- Title Simulation of cosmic ray background, as Planck would see it
- Released 01/02/2006 12:54 pm
- Copyright ESA
The Cosmic Microwave Background is visible in all directions with (almost) the same intensity. This was confirmed by the COBE satellite, which measured (almost) the same temperature of 2.7 Kelvin everywhere on the sky.
However, the very existence of other galaxies points to the fact that there should be very small changes in the measured 'temperature' of the CMB. These changes, or fluctuations, would have provided the seeds for the formation of the galaxies that we see today.
Planck will be able to measure these tiny fluctuations, up to 5 millionths of a degree.