http://wordsandunwords.com/ Words and Unwords (Words & Unwords) Where scientific and intelligent humor dominates en Serendipity 1.6 - http://www.s9y.org/ Sun, 15 May 2011 03:10:48 GMT http://wordsandunwords.com/templates/bulletproof/img/s9y_banner_small.png http://wordsandunwords.com/ 100 21 http://wordsandunwords.com/archives/367-Do-Not-Confuse-Dark-Energy-With-Dark-Matter.html Do Not Confuse Dark Energy With Dark Matter http://wordsandunwords.com/archives/367-Do-Not-Confuse-Dark-Energy-With-Dark-Matter.html#comments http://wordsandunwords.com/wfwcomment.php?cid=367 0 http://wordsandunwords.com/rss.php?version=2.0&type=comments&cid=367 nospam@example.com (L. Chang) 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! 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Bags</a></div> Sat, 14 May 2011 23:10:48 -0400 http://wordsandunwords.com/archives/367-guid.html astronomer astronomy astrophysicist astrophysics attitude dark energy dark matter do not confuse dark energy with dark matter educational galactic galaxies galaxy geek humor interstellar pie chart radiation saying space universe visible matter words and unwords