Have you ever wondered just how many lights you need to put up so Santa can see you from space?

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A new study found out just how lit you need to be to be visible to the International Space Station. And the number isn't really as many as you'd think -- just 2,683 bulbs.

However, how visible you are also depends on how much light pollution there is in your neck of the woods. In a desert, for example, you'd have a better chance of being seen.

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