How far does light travel (roughly) in one….

second: moon;
millisecond: Tahoe (~200 miles, for those not in the CA Bay Area);
microsecond: parking lot;
nanosecond: one foot;
picosecond: width of human hair;
femtosecond: across red blood cell;
attosecond: across water molecule

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On July 20, 1969, Neil Armstrong became the first person to set foot on the Moon.

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