Earth tide reason, it is believed that many of the exoplanets are captured in higher spin-orbit resonances with their host stars. Earth tide Earth tide (also known as solid Earth tide, crustal tide, body tide, bodily tide or land tide) is the displacement of the solid earth's surface caused by the gravity of the Moon and Sun. Its main component has meter-level amplitude at periods of about 12 hours and longer. The largest body tide constituents are semi-diurnal, but there are also significant diurnal, semi-annual, and fortnightly contributions. Though the gravitational forcing causing earth tides and ocean tides is the same, the
Sun and Moon (Middle-earth) for the Moon was the Silver Flower, and Gollum referred to it as the White Face. The Moon was more highly valued than the Sun by the Elves, both because it came from the Elder Tree, and because it rose first. In the universe of Middle-earth, the Moon was generally regarded as masculine, in recognition of Tilion. This gender corresponds with Máni, the personified moon in Norse mythology. In the early versions of "The Silmarillion" as described in "The Book of Lost Tales 1", a part of The History of Middle-earth series, the Sun was described in great detail as