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2 docs tagged with "obliquity"

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Projecting Between the Planes

A fence with palings a degree apart, a planet hovering above it, and what happens to the reading when you tilt the fence and leave the planet alone.

The Obliquity of the Ecliptic

The 23.4° tilt between the two reference planes, which is the tilt of the Earth's axis, and what follows from it: the Sun's changing declination, the seasons, the tropics and the polar circles.