Dozens of boxes holding mirrors are placed along a remote desert hill in northern Chile as workers make progress in the ...

The European Southern Observatory's (ESO) Extremely Large Telescope (ELT) — the world's largest visible- and infrared-light telescope — is currently under development on the Cerro Armazones mountain ...

like the James Webb Space Telescope, that means that the telescopes' primary mirror is 6.6 meters across. The bigger the primary mirror of a telescope is, the more light it can collect at one time.

The classic way to make a mirror is to grind it from a glass blank. If you make your own telescope, you can play with the look of it in interesting ways.

Making the far near The invention ... This was the first working reflecting telescope. Other designers proved unable to grind mirrors with a regular curvature, so the reflector remained largely ...

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The big problem with the early telescope is that it used mercury ... about a liquid scope is that you can pretty easily make a large mirror. You just need a shallow pool of liquid and a way ...

You can also watch a video of preparations for the big blast. The telescope's main mirror will measure almost 130 feet, making it the biggest optical/near-infrared telescope in the world ...

The telescope can peek into the past, learning how the universe looked 13 billion years ago. It uses real gold-plated mirrors to pierce through the vastness of the cosmos. Telescope mirrors ...