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NASA Again Delays Launch of Troubled Webb Telescope; Cost Estimate Rises to $9.7 Billion - The New York Times
Telescopes on the ground may be cheaper, but Hubble shows why they are not enough
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Hubble Space Telescope - Wikipedia
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Hubble Space Telescope - Wikipedia
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Hubble Space Telescope - Wikipedia
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James Webb Telescope Facts Including Cost, Orbit As Launch Date Set
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