Monday Astronomy Picture Ponderings 4/4/2022

An oval features a swath of dark blue in the bottom left which forms a large protrusion up towards the top of the oval. The core of this protrusion is very dark while the edges lighten to a teal before turning to green. In the top right is a smaller blob with yellow on the outside and red-orange on the inside. The map shows the “microwave light in the Earth’s direction of motion appears blueshifted and hence hotter, while microwave light on the opposite side of the sky is redshifted and colder.”
CMB Dipole: Speeding Through the Universe from NASA Astronomy Picture of the Day for April 3rd. Image Credit: DMR, COBE, NASA, Four-Year Sky Map

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