Once we do the math and figure out just how slow light travels, the universe doesn't seem so open and easy to cross any more. Yes, light travels about a foot at a nanosecond. That is 1 gigahertz.
The speed of light is roughly 300,000 km/s.300,000 km/second
300,000,000,000 mm/s
A nanosecond is 1/1,000,000,000 of a second.
300,000,000,000 mm/s
-------------------- = 300 mm/nanosecond (almost 1 foot)
1,000,000,000
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