View Full Version : Testing the Spiral Density Wave Theory

2011-May-29, 11:40 PM
  Spiral galaxies are one of the most captivating structures in astronomy, yet their nature is still not fully understood. Astronomers currently have two categories of theories that can explain this structure, depending on the environment of the galaxy, but a new study, accepted for publication in the Astrophysical Journal, suggests that one of these [...]

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