FACTOID # 20: Statistically, Delaware bears more cost of the US Military than any other state.
 
 Home   Encyclopedia   Statistics   States A-Z   Flags   Maps   FAQ   About 
   
 
WHAT'S NEW
 

SEARCH ALL

FACTS & STATISTICS    Advanced view

Search encyclopedia, statistics and forums:

 

 

(* = Graphable)

 

 


Encyclopedia > Cygnus Arm
Diagram of the Milky Way's spiral arms. The arrow shows the direction of the Sun's orbit.
Diagram of the Milky Way's spiral arms. The arrow shows the direction of the Sun's orbit.

The Milky Way Galaxy in which we live, in common with many other galaxies of similar type, consists of a large mass of stars drawn by gravitational forces into the form of a relatively flat disc. The disc is rotating, with the dense central body of stars moving at greater speeds than those towards the rim of the disc. As a result, the pattern of stars within the Galaxy as viewed from directly above or below the disc has formed into a spiral. Observed spiral structure of the Milky Way galaxy following Taylor, J.H. & Cordes, J.M. ApJ 411, 674 (1993). ... Observed spiral structure of the Milky Way galaxy following Taylor, J.H. & Cordes, J.M. ApJ 411, 674 (1993). ... 360-degree photographic panorama of the entire galaxy. ... The Sun is the star of our solar system. ... 360-degree photographic panorama of the entire galaxy. ... NGC 4414, a typical spiral galaxy in the constellation Coma Berenices, is about 56,000 light years in diameter and approximately 60 million light years distant. ... The Pleiades, an open cluster of stars in the constellation of Taurus. ... Gravity is a force of attraction that acts between bodies that have mass. ...


Because of localised gravitational variations, the spiral pattern has itself formed several distinct 'spiral arms', where particularly large numbers of stars can be found.


The Cygnus Arm (also known as the Outer Arm; the Norma Arm; the Cygnus-Norma arm; or, for the inner section, the kpc arm) is one of four major spiral arms extending from and around the central hub region of the Milky Way Galaxy. The Cygnus arm has a radius of 15.5 ± 2.8 kiloparsecs and lies outside the Perseus Arm. It is named for the Cygnus constellation, through which the Arm as seen from Earth passes. This article is about the unit of length. ... The Perseus Arm (labeled +I) is a spiral arm of the Milky Way galaxy with a radius of 10. ... Cygnus (IPA: , Latin: ) is a northern constellation. ...


The 'Norma Arm' is that part of the Cygnus Arm closest to the galactic hub.


 
 

COMMENTARY     


Share your thoughts, questions and commentary here
Your name
Your comments

Want to know more?
Search encyclopedia, statistics and forums:

 


Press Releases |  Feeds | Contact
The Wikipedia article included on this page is licensed under the GFDL.
Images may be subject to relevant owners' copyright.
All other elements are (c) copyright NationMaster.com 2003-5. All Rights Reserved.
Usage implies agreement with terms, 1022, m