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Answer:
According to Wikipedia, a parsec is 30 trillion kilometers.
So, a megaparsec is 30 million trillion kilometers.
And, since there are about .62 miles in a kilometer,
a megaparsec is about 19 million trillion (or quintillion) miles.
More precisely, 1 parsec = 3.08568025 x 10^16 meters.
So, 1 megaparsec = 10^6 * 3.08568025 x 10^16 meters
or 3.08568025 x 10^22 meters. Converting to kilometers,
a megaparsec is 3.08568025 x 10^19 kilometers. Converting
to miles, a megaparsec is .621371192 * 3.08568025 x 10^19
miles or 1.91735282 x 10^19 miles. This is equivalent to
19.1735282 x 10^18 miles. Since 10^18 is a million trillion
(or quintillion), 1 megaparsec = 19.1735282 million trillion miles.
First answer by Rmcghee.
Last edit by Rmcghee.
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