The celestial equator is
a. a line around the sky directly above Earth's equator.
b. the dividing line between the north and south celestial hemispheres.
c. the path that the Sun appears to follow on the celestial sphere as Earth orbits the Sun.
d. a line around the sky directly above the Earth's equator and the dividing line between the north and south celestial hemispheres.
e. a line around the sky directly above Earth's equator and the dividing line between the north and south celestial hemispheres.
d
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?
?
a.
0
b.
?/2
c.
?
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2?
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4?
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