The Earth moves around the moon. Then the mass known as earth's is moon's in inverse square force scheme. The moon is very very dense. But in that scheme, the density of sun is nearly the same as that of water. In the inverse biquadrate scheme, sun is over 100,000 times(tentative due to moon mass) dense. We have believed that sun light is from fusion. In the inverse biquadrate scheme, It can be suggested that hig pressure from high density push lights away from sun.
The Rotation period of the Moon is about 28 days which is appropriate value between those of Mars and Venus.
The Moon makes a complete orbit around the Earth with respect to the fixed stars about once every 27.3 days(its sidereal period). However, since the Earth is moving in its orbit about the Sun at the same time, it takes slightly longer for the Moon to show its same phase to Earth, which is about 29.5 days (its synodic period).
Most of the tide effects seen on the Earth are caused by the Moon's gravitational pull, with the Sun making a somewhat smaller contribution.
In the conventional inverse square scheme, The Moon is exceptionally large relative to the Earth, being a quarter the diameter of the planet. and the Earth and Moon are still commonly considered a planet-satellite system instead of double planet
>From Angular mometum conservation, Imωmsinθm = Ieωesinθe
If we assume equivalent density for moon and earth,
then dme = 0.38M * 2.626 / 0.273 =3.656 Giga Meter
Then Inverse biquadrate Gravity constant is G" should be multiplied by 9.549*9.549. GEFR = 9.5492 * 2.46 = 224.31%
The above value is reasonable because inverse square potantial is larger for outer radius. and the density of the sun converge to over 1,000 times.
Moon is nearer to earth when it is full . That is to say, moon make earth reced more than earth make when it is near the sun. For constant radial gravitational center of sun, earth and moon, Earth should go further when moon is near the sun.
Unlike most satellites of other planets, the Moon orbits near the ecliptic and not the Earth's equatorial plane. If Earth is satellite of the moon, It is Lunar stationary and orbits nearly Lunar equatorial plane.
The lunar orbit plane is inclined to the ecliptic by 5.1°, whereas the Moon's spin axis is inclined by only 1.5°.
Compared to Moon, The Earth currently has an axial tilt of about 23.44°.The axis remains tilted in the same direction towards the stars throughout a year and this means that when a hemisphere (a northern or southern half of the earth) is pointing away from the Sun at one point in the orbit then half an orbit later (half a year later) this hemisphere will be pointing towards the Sun.
Typed Sign : Myoung-June Ha-Sang Paulo Kim
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