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precession of the equinoxes, because the equinoxes moved westward along the ecliptic relative to the fixed stars, opposite to the yearly motion of the Sun along...

A solar equinox is a moment in time when the Sun crosses the Earth's equator, which is to say, appears directly above the equator, rather than north or...

In astronomy, an equinox is either of two places on the celestial sphere at which the ecliptic intersects the celestial equator. Although there are two...

March equinox is known as the vernal equinox (spring equinox) in the Northern Hemisphere and as the autumnal equinox (autumn equinox or fall equinox) in...

list of Equinox episodes shows the full set of editions of the defunct (July 1986 - December 2006) Channel 4 science documentary series Equinox. 31 July...

astronomical seasons. For example, it is the time from vernal equinox to the next vernal equinox, or from summer solstice to the next summer solstice. It is...

the primary direction, their intersection at the March equinox, is not quite fixed. A slow motion of Earth's axis, precession, causes a slow, continuous...

seasons of the year are defined by reference to the solstices and the equinoxes. The term solstice can also be used in a broader sense, as the day when...

Kolesnik; A new approach to interpretation of the non-precessional equinox motion, in Journées 2000 – systèmes de référence spatio-temporels. J2000, a...

coordinate systems of that type are themselves in motion, e.g. by the precession of the equinoxes, nowadays often resolved into precessional components...

equator, it crosses the ecliptic at two points known as the equinoxes. The Sun, in its apparent motion along the ecliptic, crosses the celestial equator at these...

Equinox is a 1970 American supernatural horror film directed by Jack Woods, and starring Edward Connell, Barbara Hewitt, Frank Bonner and Robin Christopher...

Aries, is the location of the March equinox (the vernal equinox in the northern hemisphere, and the autumnal equinox in the southern), used as a reference...

from the March equinox to the September equinox, around 186 days, unequal to the time from the September equinox to the March equinox, around 179 days...

instantaneous motion along the equator; it was originally referred to as the non-rotating origin. This point is very close to the equinox of J2000. ERA...

oscillations of this motion are averaged out, they are considered "mean" as opposed to "true" values. Thus, the vernal equinox, the equatorial plane...

December 21; summer solstice is near June 21; spring equinox is around March 20, and autumnal equinox is about September 23. The effect of the Earth's axial...

and the equinoxes of the Sun and the period of the Moon. But they had nothing other than a set of algorithms to guide them. Equations of motion were not...

of the vernal equinox had shifted by about 2° relative to the stars over the course of a century, which implied a slow, continuous motion of the celestial...

of the equinoxes, the time of year that the Sun is in a given constellation has changed since Babylonian times, and the point of March equinox has moved...