My answer to Why doesn't the sky go dark immediately once the sun drops below the horizon? https://t.co/oZp3NTZ5Ez
— Srinivasan Venkatarajan (@srini_venkat) June 18, 2019
from Twitter https://twitter.com/srini_venkat
Tuesday, June 18, 2019
My answer to Why doesn't the sky go dark immediately once the sun drops below the horizon? https://t.co/oZp3NTZ5Ez
from Twitter https://twitter.com/srini_venkat
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