The speed of light between Earth and Moon in real time! (Credit: James O'Donoghue - NASA) pic.twitter.com/llTBY97k7p— Universal-Sci (@universal_sci) May 7, 2019
The speed of light between Earth and Moon in real time! (Credit: James O'Donoghue - NASA) pic.twitter.com/llTBY97k7p— Universal-Sci (@universal_sci) May 7, 2019
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