Scientific theory
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A scientific theory is an explanation of an aspect of the natural world that can be or that has been repeatedly tested and has corroborating evidence in accordance with the scientific method, using ac
The first observation of cells, by Robert Hooke, using an early microscope. This led to the development of cell theory.
Plate tectonics
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Plate tectonics is the scientific theory that Earth's lithosphere comprises a number of large tectonic plates, which have been slowly moving since 3–4 billion years ago. The model builds on the concep
Scientific theory
…that they are unlikely ever to be fundamentally changed (for example, scientific theories such as evolution, heliocentric theory, cell theory, theory of plate tectonics, germ theory of disease, etc.). In certain cases, a scientific theory or scientific law that fails to fit all data can still be useful (due to its…
Plate motion based on Global Positioning System (GPS) satellite data from NASA JPL Archived 2011-07-21 at the Wayback Machine. Each red dot is a measuring point and vectors show direction and magnitude of motion.
Alfred Wegener in Greenland in the winter of 1912–13