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The flashes of colored light you see when you rub your eyes are called “phosphenes.”The flashes of colored light you see when you rub your eyes are called “phosphenes.”
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Astronaut is a compound word derived from the two Ancient Greek words “Astro,” meaning “star,” and “naut” meaning “sailor.” So astronaut literally means “star sailor.”Astronaut is a compound word derived from the two Ancient Greek words “Astro,” meaning “star,” and “naut” meaning “sailor.” So astronaut literally means “star sailor.”
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