Structure of Earth
The structure of Earth can be defined in two ways: by mechanical properties such as rheology, or chemically. Mechanically, it can be divided into lithosphere, asthenosphere, mesospheric mantle, outer core, and the inner core. Chemically, Earth can be divided into the crust, upper mantle, lower mantle, outer core, and inner core.
It is a subject of geology specializing in the scientific study of the chemistry, crystal structure, and physical (including optical) properties of minerals and mineralized artefacts. Specific studies within mineralogy include the processes of mineral origin and formation, classification of minerals, their geographical distribution, as well as their utilization.
Planetary science is the scientific study of planets and their planetary systems which includes moons, ring systems, gas clouds, and magnetospheres. It involves understanding how planetary systems formed, how these systems work and how all their components interact. It is a cross-discipline field including aspects of astronomy, atmospheric science, geology, space physics, biology and chemistry.
Gravity, also called gravitation, in mechanics, the universal force of attraction acting between all matters. It is by far the weakest known force in nature and thus plays no role in determining the internal properties of everyday matter. On the other hand, through its long reach and universal action, it controls the trajectories of bodies in the solar system and elsewhere in the universe and the structures and evolution of stars, galaxies, and the whole cosmos.
Space weather refers to the environmental circumstances in Earth's flux, part and also thermosphere because of the Sun and the solar radiation that may influence the functioning and irresponsibleness of space borne and ground-based systems and services or jeopardise property or human strength.
Electromagnetic (EM) radiation is a form of energy that is all around us and takes many forms, such as radio waves, microwaves, X-rays and gamma rays. Sunlight is also a form of EM energy, but visible light is only a small portion of the EM spectrum, which contains a broad range of electromagnetic wavelengths.
Space science understands all of the technical corrections that comprise planetary investigation and study ordinary singularities and physical forms happening in external space, such as space medicine and astrobiology.