The word galaxy
derives from the Greek
term for our own galaxy, galaxias
(γαλαξίας,
"milky
one"),
or kyklos
("circle") galaktikos ("milky")[10]
for its appearance in the sky. In Greek
mythology, Zeus
places his son born by a mortal woman, the infant Heracles,
on Hera's breast
while she is asleep so that the baby will drink her divine milk and
will thus become immortal. Hera wakes up while breastfeeding and then
realizes she is nursing an unknown baby: she pushes the baby away and
a jet of her milk sprays the night sky, producing the faint band of
light known as the Milky Way
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