penumbra

penumbra (pĭnŭmˈbrə) [key]: see eclipse; sunspots.

The Columbia Electronic Encyclopedia, 6th ed. Copyright © 2012, Columbia University Press. All rights reserved.

More on penumbra from Fact Monster:

  • What does it mean? penumbra - penumbra -- Listen to the pronunciation: WAV format or AU format During an eclipse, the earth's ...
  • sunspots - sunspots sunspots, dark, usually irregularly shaped spots on the sun's surface that are ...
  • eclipse - eclipse eclipse [Gr.,=failing], in astronomy, partial or total obscuring of one celestial body by ...
  • eclipse: Lunar Eclipses - Lunar Eclipses Since the earth and moon shine only by the reflected light of the sun, each casts a ...
  • right of privacy - privacy, right of privacy, right of, the right to be left alone without unwarranted intrusion by ...

See more Encyclopedia articles on: Astronomy: General