*spiral arms*

*THE 4 ‘SPIRAL ARMS’ OF THE ‘MILKY WAY’*

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*’spiral arms’ are ‘regions’ of ‘stars’ that extend from the center of ‘spiral’ + ‘barred’ spiralΒ galaxies*

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(these ‘long’/ ‘thin’ regions resemble a ‘spiral’ and thus give ‘spiral galaxies’ their name)

(naturally, different ‘classifications’ of ‘spiral galaxies’ have distinct ‘arm-structures’)

(‘Sc’ and ‘SBc’ galaxies, for instance, have very “loose” arms, whereas ‘Sa’ and ‘SBa’ galaxies have (‘tightly-wrapped’ arms) (with reference to the ‘hubble sequence’))

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(either way, ‘spiral arms’ contain many (‘young’ / ‘blue’ stars) (due to the “high ‘mass density'” and the “high rate of ‘star formation'”), which make the ‘arms’ so ‘bright’)

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*πŸ‘¨β€πŸ”¬πŸ•΅οΈβ€β™€οΈπŸ™‡β€β™€οΈ*SKETCHES*πŸ™‡β€β™‚οΈπŸ‘©β€πŸ”¬πŸ•΅οΈβ€β™‚οΈ*

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πŸ“šπŸ“–,WIKI-LINK.πŸ“–πŸ“š

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πŸ‘ˆπŸ‘ˆπŸ‘ˆβ˜œ*β€œGALAXIES”* ☞ πŸ‘‰πŸ‘‰πŸ‘‰

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πŸ’•πŸ’πŸ’–πŸ’“πŸ–€πŸ’™πŸ–€πŸ’™πŸ–€πŸ’™πŸ–€β€οΈπŸ’šπŸ’›πŸ§‘β£οΈπŸ’žπŸ’”πŸ’˜β£οΈπŸ§‘πŸ’›πŸ’šβ€οΈπŸ–€πŸ’œπŸ–€πŸ’™πŸ–€πŸ’™πŸ–€πŸ’—πŸ’–πŸ’πŸ’˜

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*🌈✨ *TABLE OF CONTENTS* ✨🌷*

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πŸ”₯πŸ”₯πŸ”₯πŸ”₯πŸ”₯πŸ”₯*we won the war* πŸ”₯πŸ”₯πŸ”₯πŸ”₯πŸ”₯πŸ”₯