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Light and Telescopes

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I had a dream, which was
not all a dream.
The bright sun was
extinguished, and the stars
Did wander darkling in the
eternal space,
Rayless, and pathless, and
the icy earth
Swung blind and blackening in
the moonless air.

Lord Byron

Questions to Explore:
  • How can we describe the different kinds of electromagnetic radiation?
  • How do telescopes work?
  • How do astronomers measure the light from celestial objects?
  • Where are some of the best places to build an observatory?
  • Why is it so important for astronomers to have observatories in space?
  • What is radio astronomy? How do radio telescopes work?

AstronomyOnline Learning Center

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