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Audio Video Interleaved Video  |  1999-11-01  |  5.1 MB  |  400x400  |  15fps  |  19 seconds
Transcription: Barred spiral galaxies consist of a straight bar in the centre which fades out at both ends. At the ends of the bar, and at a right angle to it, there are spiral arms. The size of the nuclei of these spirals varies, as does the shape of the spiral arms.