Math CentralQuandaries & Queries


Question from ROLY:

Hi: I searched you database first,no luck.

What is 2.5 million miles x 6 trillion miles (light year)

This is the distance of the ANDROMEDA Galaxy .Thanks.

Backyard astronomer.

Hi Roly.

2.5 million light years times about 6 trillion miles per light year equals

(2.5 x 106) x (6 x 1012) = 15 x 1018.

Since 1018 is a "quintillion", that's fifteen "quintillion" miles.
In scientific notation, we'd simplify it to 1.5 x 1019 miles.

Stephen La Rocque.

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