If you fire a beam of laser light at the Moon, how long will it take to get there?
At first, some might suggest that this is a relatively easy problem. Speed equals distance divided by time, so surely we can calculate how long the light will take. But do we really know how fast the light travels from Earth to Moon? Creationist astrophysicist Dr. Jason Lisle suggests that we don’t.
Source: Creation Moments
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