A false-color all-sky view from the Planck mission, showing the Milky Way galaxy as a bright stripe across the center. The image also depicts the Cosmic Microwave Background (CMB) radiation, the leftover radiation from the Big Bang, as mottled regions at the top and bottom. The contrasting colors highlight the difference between the relatively nearby Milky Way (hundreds to thousands of light-years) and the extremely distant CMB (13.7 billion light-years).

Astronomy Picture from 09/07/2010

Microwave Milky Way

Source: https://apod.nasa.gov/apod/ap100709.html


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