What Is So Unique About the Mirrors of Telescopes Such

question 9

Multiple Choice

What is so unique about the mirrors of telescopes such as the Keck Observatory, Gran Telescopio Canaries and the soon-to-be-built Giant Magellan Telescope?

• A) The mirrors are made of a newly designed metallic material.
• B) The mirrors can fold up went not in use.
• C) The mirrors are inexpensive.
• D) The mirrors are segmented.
• E) The mirrors are thin.

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