If you stand on a truck traveling 20 mph and throw a ball forward at 30 mph (relative to you at the point you threw it), the ball travels at 50 mph or at least nearly 50 mph for a milliesecond or so...in essence, the speed is the sum of the two speeds, or nearly. Now, consider a star that is moving away from the location of the big bang at a speed lets say 1,000 miles per second, shining photons forward at the speed of light, 186,000 miles per second. Relative to the original location of the big bang, is that light travelling 187,000 miles per second (faster than the speed of light)? Is the speed in space the sum of the two speeds like the ball thrown from the truck?
2007-05-04
05:35:59
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13 answers
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asked by
Bud Just A Man
2