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Cepheid Variable in Spiral Galaxy
A Cepheid is a star that varies in light intensity over regular, measurable periods. The period of pulsation is directly related to a Cepheid's intrinsic brightness making observations of these stars a powerful tool for determining distance. This animation shows a Cepheid variable star varying in brightness in the arm of a spiral galaxy.

This animation shows a Cepheid variable star varying in brightness in the arm of a spiral galaxy.    This animation shows a Cepheid variable star varying in brightness in the arm of a spiral galaxy.
Duration: 30.0 seconds
Available formats:
  1280x720 (30 fps) QUICKTIME 128 MB
  1280x720 (60 fps) MPEG-4   22 MB
  1280x720   Frames
  320x180     PNG           291 KB
  160x80       PNG           64 KB
  80x40         PNG           16 KB
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Animation Number:10145
Animator:Dana Berry (Lead)
Studio:NASA
Completed:2004-12-01
Writer:Mike McClare (HTSI)
Goddard TV Tape:G2007-007HD
Keywords:
SVS >> Galaxy
SVS >> HDTV
SVS >> Astrophysics
 
 
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