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
Solar eclipses on the Moon portion of the eclipse was rising. Eclipses were more frequent, tens of millions of years later, eclipses became less numerous as the lunar orbit slowly moved away from the Earth. The view of the sun, even its chromosphere was blocked by the Earth. Around some hundreds of millions of years ago, the Earth blocked all of the Sun's chromosphere, totality was slightly longer than the partial portion. At the same time there were more partial eclipses on the Moon. As the Moon recedes about 3 cm each year, eclipse totality length slowly shrinks and the partial portion slowly lengthens. The