Developing Knowledge

  • Paul Hodge
Part of the Astrophysics and Space Science Library book series (ASSL, volume 379)


During the first two centuries of its recognition by humans, M33 was just a vague fuzzy object among the stars. In time it evolved from a bothersome curiosity to an intriguing and puzzling phenomenon. This chapter summarizes the slowly accelerating interest in it, starting with Messier’s catalog and culminating in the early observations at the Mt. Wilson Observatory.


Radial Velocity Spiral Structure Stellar Image Puzzling Phenomenon Amateur Astronomer 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer Science+Business Media B.V. 2012

Authors and Affiliations

  1. 1.Department of AstronomyUniversity of WashingtonSeattleUSA

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