“ecliptic”的概念、定义、翻译、参考文献-科学参考

ecliptic

Physics

The great circle in which the plane of the earth’s orbit round the sun intersects the celestial sphere. It is thus the sun’s apparent annual path across the sky.

Astronomy

The apparent path of the Sun against the star background over the course of a year. The movement of the Sun along the ecliptic is actually a result of the Earth’s movement in its orbit around the Sun. Therefore the ecliptic is actually the plane of the Earth’s orbit projected on to the celestial sphere. Because of the Earth’s axial tilt, the ecliptic is inclined at about 23°.4 to the celestial equator, an angle known as the obliquity of the ecliptic. The ecliptic crosses the celestial equator at the equinoxes. It takes its name from the fact that eclipses occur when the Moon is near the plane of the ecliptic.

Space Exploration

The path, against the background of stars, that the Sun appears to follow each year as it is orbited by the Earth. It can be thought of as the plane of the Earth's orbit projected onto the celestial sphere.
The ecliptic is tilted at about 23.5° with respect to the celestial equator, a result of the tilt of the Earth's axis relative to the plane of its orbit around the Sun.

Geology and Earth Sciences

The plane of the orbit of the Earth around the Sun. It forms an angle of 23°27′ with the Earth’s equator. The orbits of the planets all lie within 3.4° of this plane, except for those of dwarf planet Pluto (17.2°) and Mercury (7°).

单词	ecliptic
释义	ecliptic Physics The great circle in which the plane of the earth’s orbit round the sun intersects the celestial sphere. It is thus the sun’s apparent annual path across the sky. Astronomy The apparent path of the Sun against the star background over the course of a year. The movement of the Sun along the ecliptic is actually a result of the Earth’s movement in its orbit around the Sun. Therefore the ecliptic is actually the plane of the Earth’s orbit projected on to the celestial sphere. Because of the Earth’s axial tilt, the ecliptic is inclined at about 23°.4 to the celestial equator, an angle known as the obliquity of the ecliptic. The ecliptic crosses the celestial equator at the equinoxes. It takes its name from the fact that eclipses occur when the Moon is near the plane of the ecliptic. Space Exploration The path, against the background of stars, that the Sun appears to follow each year as it is orbited by the Earth. It can be thought of as the plane of the Earth's orbit projected onto the celestial sphere. The ecliptic is tilted at about 23.5° with respect to the celestial equator, a result of the tilt of the Earth's axis relative to the plane of its orbit around the Sun. Geology and Earth Sciences The plane of the orbit of the Earth around the Sun. It forms an angle of 23°27′ with the Earth’s equator. The orbits of the planets all lie within 3.4° of this plane, except for those of dwarf planet Pluto (17.2°) and Mercury (7°).
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