Main articles: Natural science and Nature   See also Science, Scientific method, Scientist, Scientific misconduct, and Fields of science

Biology – Anatomy ( Human anatomy) • Astrobiology • Biochemistry • Bioinformatics • Biological anthropology • Biophysics • Botany • Cell biology • Computational biology • Developmental biology • Ecology • Evolutionary biology • Genetics ( Molecular genetics, Population genetics) • Genomics • Marine biology • Histology • Human biology • Immunology • Microbiology • Molecular biology • Neuroscience • Origin of life • Paleontology • Parasitology • Pathology • Physiology • Taxonomy • Zoology ( Entomology, Ethology)

Physical sciences – Earth science • Systems theory

Astronomy – Optical astronomy • Infrared astronomy • Radio astronomy • High-energy astronomy • Occultation

Astronomical object – Planet • Dwarf planet • Exoplanet • Stars • Solar System • Planetary system • Constellation • Star cluster • Nebulae • Galaxies • Galaxy cluster • Black holes • Neutron stars • Supernovae

Chemistry – Analytical chemistry • Atomic theory • Biochemistry • Chemical bond • Chemical equilibrium • Chemical industry • Chemical laws • Chemical reaction • Chemical formulas • Chemists • Electrochemistry • Energy • History of chemistry • Inorganic compounds • Materials science • Ion • Periodic table • pH • Phase • Polymer chemistry • Redox • Thermochemistry

Matter – Atom • Compound • Molecule • Substance ( Acid, Base)

Chemical elements – Actinium • Aluminium • Americium • Antimony • Argon • Arsenic • Astatine • Barium • Berkelium • Beryllium • Bismuth • Bohrium • Boron • Bromine • Cadmium • Caesium • Calcium • Californium • Carbon • Cerium • Chlorine • Chromium • Cobalt • Copernicium • Copper • Curium • Darmstadtium • Dubnium • Dysprosium • Einsteinium • Erbium • Europium • Fermium • Flerovium (Ununquadium) • Fluorine • Francium • Gadolinium • Gallium • Germanium • Gold • Hafnium • Hassium • Helium • Holmium • Hydrogen • Indium • Iodine • Iridium • Iron • Krypton • Lanthanum • Lawrencium • Lead • Lithium • Livermorium (Ununhexium) • Lutetium • Magnesium • Manganese • Meitnerium • Mendelevium • Mercury • Molybdenum • Moscovium (Ununpentium) • Neodymium • Neon • Neptunium • Nickel • Nihonium (Ununtrium) • Niobium • Nitrogen • Nobelium • Oganesson (Ununoctium) • Osmium • Oxygen • Palladium • Phosphorus • Platinum • Plutonium • Polonium • Potassium • Praseodymium • Promethium • Protactinium • Radium • Radon • Rhenium • Rhodium • Roentgenium • Rubidium • Ruthenium • Rutherfordium • Samarium • Scandium • Seaborgium • Selenium • Silicon • Silver • Sodium • Strontium • Sulfur • Tantalum • Technetium • Tellurium • Tennessine (Ununseptium) • Terbium • Thallium • Thorium • Thulium • Tin • Titanium • Tungsten • Uranium • Vanadium • Xenon • Ytterbium • Yttrium • Zinc • Zirconium

Physics – Atom • Atomic nucleus • Color • Elementary particle • Force • Gravitation • Mass • Matter • Optics • Phase • Quantum mechanics • Sound • Speed • Time • Weight • Energy • Radiation • Electromagnetic radiation • Visible spectrum • Special relativity • General relativity • Electromagnetism • Standard Model • Classical mechanics • Unsolved problems in physics