Astronomy
- Celestial pole, the projection of the planet Earth's axis of rotation onto the celestial sphere; also applies to the axis of rotation of other planets
- Pole star, a visible star that is approximately aligned with the Earth's axis of rotation
- Orbital pole, the projection of the line perpendicular to planet Earth's orbit onto the celestial sphere; also applies to the orbit of other planets
- Poles of astronomical bodies, concepts analogous to the Earth's geographic and magnetic poles on other planets and Solar System bodies
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Famous quotes containing the word astronomy:
“It is noticed, that the consideration of the great periods and spaces of astronomy induces a dignity of mind, and an indifference to death.”
—Ralph Waldo Emerson (1803–1882)