It takes 1.3 to 1.4 nanoseconds for light to travel 1 foot.
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1.5 days = 1.29600 × 1014 nanoseconds.
Well, an eon is a really, really long time, like the blink of an eye for the universe. And a nanosecond is a tiny, tiny fraction of a second, like a little whisper in the wind. So, there are so many nanoseconds in an eon that it's like trying to count all the happy little trees in a forest - you just have to appreciate the beauty of it all instead.
None. It's a trick question. Light travels in firsts.
I could write 1 femtosecond as "1 femtosecond" : not a zero in sight. or as 0.000001 nanoseconds (6 zeros) or .000001 nanoseconds (5 zeros) 1 fs = 10-15 seconds so there are 14 0s between the decimal point and the 1.
How many hours does it take to get to 4.5 billion km