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This air-based telescope is needed to observe in the infrared. Since most of the infrared radiation is absorbed by the Earth's atmosphere we need to send a telescope to higher altitudes or, even better, into space. To understand why infrared observations are important and how astronomers can reveal information about various astronomical phenomena by scanning the sky at all different wavelengths you can read our article about the electromagnetic spectrum.

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SOFIA Infrared Telescope
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Published by Published or last modified on 2017-01-14