Serving as the foundation for classical mechanics, Newton's laws of motion help mathematically describe countless processes that are crucial to astrometric projects.
Kepler's laws of planetary motion are: the orbits of the planets are ellipses with the sun at one focus, a line from a planet to the sun sweeps over equal areas in equal intervals of time, and a planet’s orbital period (P) squared is proportional to its average distance from the sun (a) cubed
EM Radiation Overview
The electromagnetic spectrum describes light, and all objects above 0 Kelvin emit light.
The Doppler shift is the change of a wavelength with motion, and is most used in astronomy in the field of spectroscopy