Do Not Confuse Dark Energy With Dark Matter

Do you know about the difference between dark energy and dark matter? Dark energy is a hypothetical form of energy that permeates all of space and tends to increase the rate of expansion of the universe. Dark matter is matter that is inferred to exist from gravitational effects on visible matter and background radiation, but is undetectable by emitted or scattered electromagnetic radiation and is hypothesized to account for discrepancies between measurements of the mass of galaxies, clusters of galaxies and the entire universe made through dynamical and general relativistic means, and measurements based on the mass of the visible "luminous" matter these objects contain: stars and the gas and dust of the interstellar and intergalactic medium. Got that? Make others do a double-take on the concepts of dark energy and dark matter with any of these astronomical attitude gifts! For all astronomers, astrophysicists, and cosmologists who think about the composition of the Universe!