What a great solar-system video!
It's not that light is "slow" by any means--186,000 miles per second isn't "slow"--it just that the distances in space are so incredibly vast it boggles the mind. This video does a terrific job of helping viewers conceptualize such great distances (distances that have no Earthly analogue.) Imagine that just to get to the nearest star (Alpha Centarii) would take 4 years
@ 186,000 miles per second, just to go one way
. If we wanted to come back--it would take another 4 years same speed of travel. Meanwhile, the Earth would have aged 500 years--or something relative to time dilation...while we'd have aged 8 years. It may well be 5 centuries before we can even approach space travel at a respectable percentage of light speed...
It is well known universally that I do not make mistakes--so, if you should happen across an error in that which I have written, please be assured that *I* did not write it!...:)