30 jahre
You may have heard physicists describe the moon as being 1.3 light-seconds away, or the sun as 8 light-minutes away, and thought "what is this nonsense? measuring distances with...
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Andrew, it’s the twenty-first century! Use the computer! Right, love to, but I seem to have inexplicably turned my computer into a ukulele. [ukulele strums] And I suppose you’d like me to input this...
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