Neither one reflects the other; they're both blue for entirely different reasons.

Here's how to find the darkest skies for stargazing, including how to find an area with a low Bortle Number, apps and maps to find dark places, and a guide to dark sky parks and reserves.

"Dark Skies: A Practical Guide to Astrotourism" lists 35 sites around the world where people can see the stars, planets, and northern lights without light pollution from cities and towns.

When I want to clear my head, it's only 27 steps from my office to the great outdoors where a big, beautiful sky is waiting to greet me. What's your blue sky where you are?

It won’t make the sky as pristine as you’d find in Northern Arizona, but it’s a start. For more from Lifehacker, be sure to follow us on Instagram @lifehackerdotcom.

But when you combine the blue and violet light of the sky, the greenish tinge of blue and reddish tinge of violet are about the same, and wash out. So what we see is a pale blue sky.

Why is the sky blue? And why is the sky so many other colors? When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works.

If you can hear thunder, you are in danger. Don’t be fooled by blue skies. If you hear thunder, lightning is close enough to pose an immediate threat.

Tonight's moon will be the first of four supermoons in the coming months. Although it is a rare blue supermoon, it could be a different colour entirely.

These images show how many more stars you can see in truly dark skies, outside of cities, suburbs, and other human light sources: Level nine classifies inner city skies, the worst for stargazing.