Science / Tides and Currents / Ecliptic: The intersection of the plane of the Earth's orbit with the celestial sphere.

Obliquity Of The Ecliptic

Science / Astrology / Obliquity Of The Ecliptic: The angle between the plane of the ecliptic and the plane of the equator. It now measures about 23°27', and is decreasing at the rate of one minute in 128 years. MORE


Science / Astrology / Node: The point of intersection of a planet's orbit and the ecliptic. MORE

Lunar Nodes

Science / Tides and Currents / Lunar Nodes: The points where the plane of the Moon's orbit intersects the ecliptic. The point where the Moon crosses in going from south to north is called the ascending node and the point where the crossing is f MORE


Science / Astrology / Nodes: The two points in a planet's orbit which intercept the Earth's path around the sun (otherwise known as the ecliptic). MORE


Science / Astrology / Solstice: Either of two points on the ecliptic at which the Sun reaches it farthest point north (0° Cancer) or south (0° Capricorn) of the equator. The longest day of the occurs at summer solstice (first day MORE


Science / Astrology / Precession: The circular motion of Earth's axis around the pole of the ecliptic, caused by the gravitational pull of the Sun and Moon on the bulging part of the equator. One complete revolution takes approximatel MORE