Physics and Astronomy: Home
Physics is the science of matter and energy and the interactions between the two [for example E = mc2]. Physics is grouped in traditional fields such as acoustics, optics, mechanics, thermodynamics, and electromagnetism, as well as in modern extensions including atomic and nuclear physics, quantum physics, cryogenics, solid-state physics, particle physics, and plasma physics.
Astronomy is the scientific study of matter and energy in outer space, especially the positions, dimensions, distribution, motion, composition, energy, and evolution of celestial bodies and phenomena. Astrophysics is the branch of astronomy that deals with the physics of stellar/celestial phenomena.
Created on July 2000. Last updated on 16 January 2012.