The thermosphere is a thermal classification. It is the layer of the atmosphere located between the mesosphere and outer space. In the thermosphere, temperature increases with altitude. The thermosphere includes the exosphere and part of the ionosphere . A tholus is a small mountain or hill that is dome-shaped.
Electrons are tiny, negatively-charged atomic particles.
In an atom , they orbit around the nucleus. When one celestial body orbits another, tidal forces tend to equalize the rotational periods, so that, after a very long time, they may become identical. This end result is called tidal coupling. As a consequence of the tidal interactions with the Moon, the Earth's rotational period is slowly decreasing . Billions of years from now, the Earth and the Moon will have the same period of rotation, and these will also exactly equal the orbital period of the Moon around the Earth.