Astronomy

Physics

Chemistry

the Earth science

Astronomy

Astronomy, including astrophysics and cosmology, studies the entire universe beyond the Earth, including the universe’s structure and evolution, its cosmic objects (as stars, galaxies, planets, moons, asteroids, comets and nebulae) and their physical processes (as supernovae explosions, gamma ray bursts, and cosmic microwave background radiation, etc.), and how the Earth relates to interactions with the solar system.

Chemistry

Chemistry treats of the structure, composition and properties of substances and all possible changes, transformations or reactions they undergo, being about the properties and reactions of molecules. It is about the interactions of substances through chemical reactions to form different substances, including analytical chemistry, inorganic chemistry, organic chemistry, biochemistry, polymer chemistry, physical chemistry, and industrial chemistry.

The Earth science

Earth science is dealing with planet Earth, how the natural environment (ecosphere of geosphere and biosphere or Earth ecosystem) works and evolves, including the study of the atmosphere, hydrosphere, lithosphere, and biosphere, involving atmospheric science and environmental science, geology and geography, geoinformatics, glaciology, oceanography and soil science.

Physics

The core of physical science, physics, deals with the structure of the matter and the interactions of the fundamental constituents of the universe, including all the hypothetical constructs like as “dark energy”, “dark matter”, or “dark force”. It is the science that treats of matter and energy, forces and interactions and their regularities and laws governing the reciprocal interplay while being tested and proved by analysis and observation, control and measurement.

Mathematics

Mathematics, as the key tool of natural science, is emerging as the abstract science of structure, order and relationship. As applied mathematics, mathematical physics has to generate a complete and consistent representation of nature as the system of natural entities, forces and changes, the total sum of material existences and forces in the universe, all in terms of mathematical systems of definitions and axioms, rules, as the function rule, principles, as duality, and theorems, deduced laws.

Natural Ontology

Natural ontology is the study of the universe as such, the basic features of all the universe, as the nature of force, matter and energy, space and time, natural entities and cause-effect relationships. As an example, mathematical and theoretical physics is to combine physics, mathematics and theoretical ontology of nature. Or, the unity of the all forces of nature is an ontological axiom.

Therefore, despite seeming differences, all the physical sciences are interrelated by the basic principles underlying all natural processes, phenomena and interactions, provided by the principal natural science of physics.

Modern Physics: Its Key Subjects and Principles

“Physics has evolved and continues to evolve without any single strategy”, while its ultimate goal to find a unified set of principles and laws governing force and energy, matter and change, at micro-, meso– and macro-world (Physical Sciences, the New Encyclopedia Britannica, 25, Knowledge in Depth, Chicago-Toronto, Encyclopedia Britannica, Inc., 1994 ).

Generally, the key achievements in physical science lie in the serendipitous and intuitive and ingenious discovering of empirical physical laws and effects, subatomic entities, symmetry principles, conservation laws, or unified force fields