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Space to Ground: A Star to Steer By: 08/10/2018

10 Aug 2018, 03:10 UTC
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A TOOL THAT HELPED GUIDE SAILORS ACROSS VAST OCEANS FOR CENTURIES IS NOW BEING PUT TO THE TEST IN SPACE. THE CREW HAS BEEN TESTING OUT A SEXTANT, A DEVICE WITH A SMALL TELESCOPE-LIKE SIGHT THAT CAN TAKE PRECISE MEASUREMENTS BETWEEN PAIRS OF STARS. THESE WERE ACTUALLY USED IN THE EARLY DAYS OF HUMAN SPACEFLIGHT ON PROGRAMS LIKE GEMINI AND APOLLO, AND MISSION PLANNERS ARE ONCE AGAIN LOOKING AT HOW THEY COULD BE USED FOR EMERGENCY NAVIGATION NEEDS ON DEEP-SPACE EXPLORATION VEHICLES LIKE ORION.

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