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04. Why Do Stars Twinkle?

Country Available: Canada

Bob MacDonald

Surprisingly, the twinkling effect has nothing to do with the stars themselves. The turbulent air above our heads is what distorts starlight. But despite the twinkling, astronomers have found a way to make celestial objects look clear and steady in their huge telescopes. In this episode we learn how those telescopes work. From a fireside star party, where we see how some stars twinkle more than others, we journey to mountain tops where some of the largest telescopes in the world sit high above city lights and the stars don’t twinkle so much. We travel into space where orbiting telescopes get the clearest images of the universe and see e future instruments that will look back to the very beginning of time.

View a printer friendly version of this page...Copyright Date: 2005 Closed Captioned Length: 28 minutes Library Audience:
  • Youth and Adult
  • School Audience:
  • Grades 4 - 12
  • Subjects:
  • Science: Astronomy, Astronautics, Physics
  • Formats Available:
  • VHS Tape
  • DVD
  • View other titles in this series...