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This is an accepted version of this page This is the latest accepted revision, reviewed on 31 December 2024. Area of the sky divided into twelve signs For the East Asian zodiac, see Chinese zodiac. For other uses, see Zodiac (disambiguation). The Earth's orbit around the Sun causes the apparent motion of the latter along the ecliptic (red). Earth is axially tilted 23.4° relative to this plane ...
The Earth in its orbit around the Sun causes the Sun to appear on the celestial sphere moving over the ecliptic (red), which is tilted on the equator (blue). The Zodiac is a group of 12 constellations: Aries , Taurus , Gemini , Cancer , Leo , Virgo , Libra , Scorpius , Sagittarius , Capricornus , Aquarius , Pisces .
The Sidereal Zodiac is drawn based on the Earth's position in relation to the constellations, and follows their movements in the sky. Due to a phenomenon called precession of the equinoxes (where the Earth's axis slowly rotates like a spinning top in a 25,700-year cycle), there is a slow shift in the correspondence between Earth's seasons (and ...
The equinox was located at the western edge of the constellation Aries when western astrology was codified in the Tetra Biblos, but as a result of the precession of the equinoxes the positions of tropical astrology's zodiacal signs no longer overlap the constellations they were named for, because the starting point of the system of signs at the ...
The rotation axis of the Earth describes over a period of about 25,800 years a small circle (blue) among the stars, centred on the ecliptic northpole (blue E) and with an angular radius of about 23.4°: the angle known as the obliquity of the ecliptic. The orange axis was the Earth's rotation axis 5000 years ago when it pointed to the star Thuban.
Earth — 2 – Taurus; 6 – Virgo; 10 – Capricorn – heavy, cold, dry; ... In ancient astrology, triplicities were more of a seasonal nature, so a season was ...
This planetary nebula is of historical interest following its discovery by German-born English astronomer William Herschel in 1790. Prior to that time, astronomers had assumed that nebulae were simply unresolved groups of stars. However, Herschel could clearly resolve a star at the center of the nebula that was surrounded by a nebulous cloud of ...
The Red Spider Nebula (NGC 6537) is a planetary nebula located at a distance of about 4000 light-years from Earth. NGC 6559 is a star-forming region located at a distance of about 5000 light-years from Earth, in the constellation of Sagittarius, showing both emission (red) and reflection (blue) regions.