glenc
12-03-2008, 06:54 PM
How fast are you going now?
CMBR Dipole: Speeding Through the Universe
Credit: DMR (http://lambda.gsfc.nasa.gov/product/cobe/dmr_overview.cfm), COBE (http://lambda.gsfc.nasa.gov/product/cobe/), NASA (http://www.nasa.gov/), Four-Year Sky Map
Explanation: Our Earth (http://antwrp.gsfc.nasa.gov/apod/ap070325.html) is not at rest. The Earth moves around the Sun (http://antwrp.gsfc.nasa.gov/apod/ap070624.html). The Sun orbits the center of the Milky Way Galaxy (http://antwrp.gsfc.nasa.gov/apod/ap071020.html). The Milky Way Galaxy orbits in the Local Group of Galaxies (http://www.seds.org/messier/more/local.html). The Local Group falls toward the Virgo Cluster of Galaxies (http://antwrp.gsfc.nasa.gov/apod/ap050213.html). But these speeds are less than the speed that all of these objects together move relative to the cosmic microwave background radiation (http://www.astro.ubc.ca/people/scott/faq_basic.html) (CMBR). In the above all-sky map (http://lambda.gsfc.nasa.gov/product/cobe/dmr_image.cfm) from the COBE satellite (http://en.wikipedia.org/wiki/COBE), radiation in the Earth's direction of motion appears blueshifted (http://imagine.gsfc.nasa.gov/docs/dictionary.html#blueshift) and hence hotter, while radiation (http://cosmicvariance.com/2008/03/05/wmap-5-year-results-released/) on the opposite side of the sky is redshifted (http://en.wikipedia.org/wiki/Redshift) and colder. The map (http://map.gsfc.nasa.gov/) indicates that the Local Group (http://en.wikipedia.org/wiki/Local_group) moves at about 600 kilometers per second relative to this primordial radiation (http://www.nap.edu/readingroom/books/cosmology/2.html#CMBR). This high speed was initially unexpected and its magnitude is still unexplained. Why are we moving so fast (http://en.wikipedia.org/wiki/Cosmic_microwave_background)? What is out there? (http://antwrp.gsfc.nasa.gov/apod/ap000104.html)
http://antwrp.gsfc.nasa.gov/apod/ap080309.html
CMBR Dipole: Speeding Through the Universe
Credit: DMR (http://lambda.gsfc.nasa.gov/product/cobe/dmr_overview.cfm), COBE (http://lambda.gsfc.nasa.gov/product/cobe/), NASA (http://www.nasa.gov/), Four-Year Sky Map
Explanation: Our Earth (http://antwrp.gsfc.nasa.gov/apod/ap070325.html) is not at rest. The Earth moves around the Sun (http://antwrp.gsfc.nasa.gov/apod/ap070624.html). The Sun orbits the center of the Milky Way Galaxy (http://antwrp.gsfc.nasa.gov/apod/ap071020.html). The Milky Way Galaxy orbits in the Local Group of Galaxies (http://www.seds.org/messier/more/local.html). The Local Group falls toward the Virgo Cluster of Galaxies (http://antwrp.gsfc.nasa.gov/apod/ap050213.html). But these speeds are less than the speed that all of these objects together move relative to the cosmic microwave background radiation (http://www.astro.ubc.ca/people/scott/faq_basic.html) (CMBR). In the above all-sky map (http://lambda.gsfc.nasa.gov/product/cobe/dmr_image.cfm) from the COBE satellite (http://en.wikipedia.org/wiki/COBE), radiation in the Earth's direction of motion appears blueshifted (http://imagine.gsfc.nasa.gov/docs/dictionary.html#blueshift) and hence hotter, while radiation (http://cosmicvariance.com/2008/03/05/wmap-5-year-results-released/) on the opposite side of the sky is redshifted (http://en.wikipedia.org/wiki/Redshift) and colder. The map (http://map.gsfc.nasa.gov/) indicates that the Local Group (http://en.wikipedia.org/wiki/Local_group) moves at about 600 kilometers per second relative to this primordial radiation (http://www.nap.edu/readingroom/books/cosmology/2.html#CMBR). This high speed was initially unexpected and its magnitude is still unexplained. Why are we moving so fast (http://en.wikipedia.org/wiki/Cosmic_microwave_background)? What is out there? (http://antwrp.gsfc.nasa.gov/apod/ap000104.html)
http://antwrp.gsfc.nasa.gov/apod/ap080309.html