NASA's costly SOFIA telescope has reached its end. But its legacy lives on - Interesting Engineering

NASA is retiring SOFIA after some major accomplishments like detecting water on the sunny side of the moon. Turns out, it just wasn't worth the cost.

Sometimes you have to stop and ask yourself: is it worth it? NASA and the German Aerospace Center did, and decided that the Stratospheric Observatory for Infrared Astronomy (SOFIA) — which is a plan… [+5673 chars]

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