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>Doesn't this all depend upon the precision required?
>I think 8 minutes is good enough for younger children.
>As they get older then we can get more precise.
Why not say to younger children "Light from the Sun takes
more than eight minutes to reach us"?
(The common scientific literacy test answer would be
eight minutes for adults, and some of those would think
it means *exactly* eight minutes.
The number is "out
there". Many also know that the AU is 93 million miles.
That number is good to better than 0.05%, more accurate
than the number Canadian school children learn: 150
million kilometers.)
Leigh