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This is Scientific American 60-Second Space, I'm Clara Moskowitz.Got a minute?

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High on a Chilean mountaintop, scientists have broken ground on what will be the world's largest telescope.

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Called the European Extremely Large Telescope, or E-ELT,

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the observatory may even be sensitive enough to spot signs of extraterrestrial life on alien planets, if there is any, of course.

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The E-ELT's gigantic 39-meter wide primary mirror will capture 15 times more light than any existing optical telescope,

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and its images should be 16 times sharper than the Hubble Space Telescope's.

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That kind of view could reveal exoplanets changing color with the seasons, suggesting the presence of vegetation.

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The scope might also reveal planetary atmospheres with chemicals consistent with life, such as oxygen, ozone, carbon dioxide and methane.

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The European Southern Observatory is building the telescope.

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On June 19th they blasted off the top of the Cerro Armazones mountain to create a plateau for the facility.

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The 3,000 meter-high site offers incredibly clear skies with a minimum of atmosphere to distort the images.

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The huge construction project is set to finish in 2023.

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Then, just maybe, we'll catch a glimpse of the activities of any cosmic neighbors.

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Thanks for the minute, for Scientific American 60-Second Space. I'm Clara Moskowitz.

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