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According to the IAU's explicit count, there are eight planets in the Solar System; four terrestrial planets (Mercury, Venus, Earth, and Mars) and four giant planets, which can be divided further into two gas giants (Jupiter and Saturn) and two ice giants (Uranus and Neptune). When excluding the Sun, the four giant planets account for more than ...
Consequently, Venus transits only occur when an inferior conjunction takes place during some days of June or December, when the orbits of Venus and Earth cross a straight line with the Sun. [189] This results in Venus transiting above Earth in a sequence currently of 8 years, 105.5 years, 8 years and 121.5 years, forming cycles of 243 years.
An Earth god or Earth goddess is a deification of the Earth associated with a figure with chthonic or terrestrial attributes. There are many different Earth goddesses and gods in many different cultures mythology. However, Earth is usually portrayed as a goddess. Earth goddesses are often associated with the chthonic deities of the underworld. [1]
The Romans considered the planet Lucifer particularly sacred to the goddess Venus, whose name eventually became the scientific name for the planet. The second century Roman mythographer Pseudo-Hyginus said of the planet: [48] "The fourth star is that of Venus, Luciferus by name. Some say it is Juno's. In many tales it is recorded that it is ...
The gravity g′ at depth d is given by g′ = g(1 − d/R) where g is acceleration due to gravity on the surface of the Earth, d is depth and R is the radius of the Earth. If the density decreased linearly with increasing radius from a density ρ 0 at the center to ρ 1 at the surface, then ρ ( r ) = ρ 0 − ( ρ 0 − ρ 1 ) r / R , and the ...
It is sometimes called Earth's "sister planet" due to their similar size, gravity, and bulk composition (Venus is both the closest planet to Earth and the planet closest in size to Earth). The surface of Venus is covered by a dense atmosphere and presents clear evidence of former violent volcanic activity.
Equivalence here is by the gods' roles; for instance, Venus and Frige were both goddesses of love. It can be correlated that the Norse gods were attributed to each Roman planet and its god, probably due to Roman influence rather than coincidentally by the naming of the planets. A vestige of the Roman convention remains in the English name Saturday.
Ovid's Fasti, Book 4, invokes Venus not by name but as "Mother of the Twin Loves", the gemini amores. [z] "Amor" is the Latin name preferred by Roman poets and literati for the personification of "kindly" love. Where Cupid (lust) can be imperious, cruel, prone to mischief or even war-like, Amor softly persuades.