Milky Way Arms

Milky Way Arms

A "God's view" map of Milky Way as seen from far Galactic North (in Coma Berenices). The star-like lines center in a yellow dot representing the position of Sun. The spokes of that "star" are marked with constellation abbreviations: Ori Orion Aur Auriga Cas Cassiopeia Cep Cepheus Cyg Cygnus Aql Aquila Sgr Sagittarius Nor Norma Cen Centaurus Vel Vela Pup Puppis CMa Canis Major The spiral arms are colored differently in order to highlight what structure belongs to which arm. H II regions are marked as dots colored in the same color as their spiral arm. They come in three sizes, measured by the excitation parameter U: small - U > 200 pc cm-2 medium - 200 > U > 110 pc cm-2 large - 110 > U > 70 pc cm-2

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UploadedMay 10, 2026

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