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Asked by xx~Jess'~Bessie~Victoria's~Best~Friend~Sarah's~Bestie~xx to Theo on 13 Nov 2014.
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Theo Laftsoglou answered on 13 Nov 2014:
Hey! What is darkness? Is it not the absent of light? If we accept that darkness is the absent of light, then we have to wonder how fast is light and it is quite fast! Very fast actually! You can think of it as a big train on the train-lines. When the train isn’t there (or when the light isn’t there) we can see the train-lines ( the darkness). But, us seeing the train-lines depends on how fast the train moves away from us!
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Comments
xx~Jess'~Bessie~Victoria's~Best~Friend~Sarah's~Bestie~xx commented on :
I never thought of it in that way! Thanks!!
ScienceGuy commented on :
Interesting answer but is also debatable: it is either always there or it travels an equal speed.