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The length of time it takes light to reach earth has a lot to do with where it starts out from.

If it starts from the moon, it takes about 1.5 seconds. If it starts from the sun, it takes about

8 and 1/3 minutes. If it starts from the nearest star, it takes about 4.4 years. If it starts from

the North Star, it takes about 230 years. If it starts from the Andromeda Galaxy, it takes about

2.5 million years.

Sound can't reach the earth from any other body. Sound needs air to travel through, and there's

no air past a couple hundred miles above earth's surface. Sound can't even travel between two

astronauts standing on the moon 2-ft apart.

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15y ago

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