Yep, the speed of light is ~300,000 kilometers per second (the distance light travels is its speed times time -> 300,000 times 1 year in seconds…), or 1 foot per nano second. So it takes like 5-10 nanoseconds for light to get to your eyes when you flip a light switch. We see everything in our daily lives as it was a number of nanoseconds ago, and stars as they were years ago.
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