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The Conversation USA

How do you build a mirror for one of the world's biggest telescopes?

  • Written by The Conversation Contributor
image20 tons of Ohara E6 borosilicate glass being loaded onto the mold of one of the GMT's mirrors.Ray Bertram, Steward Observatory, CC BY-ND

When astronomers point their telescopes up at the sky to see distant supernovae or quasars, they’re collecting light that’s traveled millions or even billions of light-years through space. Even huge...

Read more: How do you build a mirror for one of the world's biggest telescopes?

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