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Light stopped completely for a minute inside a crystal http://www.extremetech.com/extreme/162289-light-stopped-comp…
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«Super-Photon» https://www.uni-bonn.de/neues/305-2010
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The 8-minute travel time to Earth by sunlight hides a thousand-year journey that actually began in the core.https://sunearthday.nasa.gov/2007/locations/ttt_sunlight.php
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Light completely stopped for a record-breaking minute, New Scientist, 2016