A New Generation of Ground-Based Telescopes Is Currently Being Built

question 100

Multiple Choice

A new generation of ground-based telescopes is currently being built that overcomes the limitations of the older large telescopes. Some of these new telescopes

• A) use segmented mirrors.
• B) use mirrors that are very thin.
• C) use active optics to control the shape of the mirror.
• D) all of the above.
• E) none of the above.

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