• Valerie Illingworth
Part of the Macmillan Dictionary Series book series (DICTS)


Eagle nebula (M16). A large *emis- sion nebula — an HII region — that is located about 2.5 kiloparsecs away in the direction of the constellation Serpens. It contains some hot young stars that are part of an open cluster.


Solar Eclipse Escape Velocity Lunar Eclipse Ephemeris Time Celestial Equator 
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

© Laurence Urdang Associates Ltd 1979

Authors and Affiliations

  • Valerie Illingworth

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