Printer Friendly
Dictionary, Encyclopedia and Thesaurus - The Free Dictionary
3,899,673,540 visitors served.
forum Join the Word of the Day Mailing List For webmasters
?
Dictionary/
thesaurus
Medical
dictionary
Legal
dictionary
Financial
dictionary
Acronyms
 
Idioms
Encyclopedia
Wikipedia
encyclopedia
?

Galactic Year

   Also found in: Wikipedia 0.02 sec.
Galactic Year 

the period of revolution of the sun and the stars closest to it around the center of the Milky Way System. Usually it is this quantity that is considered the period of rotation of the Milky Way System. (The period of revolution varies among stars that are located at different distances from the center of the Milky Way System.) The galactic year is equal to about 180 million earth years.
Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content.
?Page tools
Printer friendly
Cite / link 		Feedback
Mentioned in?  References in periodicals archive?   Encyclopedia browser?   Full browser?
No references found
 
Younger, chaotic ring structures, says Schechter, are 1 or 2 galactic years old (a galactic year being one rotation of the galaxy), ranging anywhere from 100 million to 200 million years.
Ring around the galaxy: polar-ring galaxies may help add pieces to ... by Hartley, Karen / Science News
 
 
 
Encyclopedia
?

Terms of Use | Privacy policy | Feedback | Advertise with Us | Copyright © 2012 Farlex, Inc.
Disclaimer
All content on this website, including dictionary, thesaurus, literature, geography, and other reference data is for informational purposes only. This information should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional.