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Latest Density wave theory Stories

Study Of Massive Stars Shows Milky Way's Missing Arms
2013-12-17 08:54:09

A 12-year study of massive stars has reaffirmed that our Galaxy has four spiral arms, following years of debate sparked by images taken by NASA's Spitzer Space Telescope that only showed two arms.

spacepress-082511-003a
2011-08-25 10:27:56

For almost 20 years astrophysicists have been trying to recreate the formation of spiral galaxies such as our Milky Way realistically.


Word of the Day
postliminy
  • In Roman antiquity, the return of a person who had been banished, or taken prisoner by an enemy, to his old condition and former privileges.
  • In international law, that right by virtue of which persons and things taken by an enemy in war are restored to their former status when coming again under the power of the nation to which they belonged.
The word 'postliminy' comes from a Latin word meaning 'threshold'.