*THE 4 ‘SPIRAL ARMS’ OF THE ‘MILKY WAY’*
.
*’spiral arms’ are ‘regions’ of ‘stars’ that extend from the center of ‘spiral’ + ‘barred’ spiralΒ galaxies*
.
(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’))
.
(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’)
.
.
*π¨βπ¬π΅οΈββοΈπββοΈ*SKETCHES*πββοΈπ©βπ¬π΅οΈββοΈ*
.
.
.
πππβ*βGALAXIESβ* β πππ
.
.
πππππ€ππ€ππ€ππ€β€οΈπππ§‘β£οΈπππβ£οΈπ§‘ππβ€οΈπ€ππ€ππ€ππ€ππππ
.
.
*πβ¨ *TABLE OF CONTENTS* β¨π·*
.
.
π₯π₯π₯π₯π₯π₯*we won the war* π₯π₯π₯π₯π₯π₯