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NASA Jets Chase The Total Solar Eclipse
NASA is retrofitting two WB-57F aircraft to follow the solar eclipse and capture what is expected to be the clearest view of the outer atmosphere of the sun yet (svs.gsfc.nasa.gov) さらに...
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The shadow of moon will travel eastwards at a speed of nearly 1000 mph !
It takes 24 hours to cover 24000 miles (periphery of Earth).
It takes 24 hours to cover 24000 miles (periphery of Earth).
https://www.nasa.gov/feature/goddard/2017/chasing-the-total-solar-eclipse-from-nasa-s-wb-57f-jets