A blue sky is a good sky. It's a reassuring sight that promises clear weather and bright days. But what does it mean when the sky turns purple? While it's not uncommon to spot purple skies during ...

So the sky isn't blue, at least not always. It is a glow-in-the-dark night sky too, colored a mix of green, yellow and red. Its colors result from scattered sunlight, oxygen, and sodium from ...

The dark night sky has special meaning for Krystal De Napoli, an astrophysicist and Gomeroi woman, but light pollution is erasing constellations from view that have guided her peoples' connection ...

10 Night sky targets to celebrate International Dark Sky Week 2025; This mellow light blue may certainly seem familiar. Depending on where and at what time of the day you look at the sky, ...

The designation places the Grand Canyon into esteemed company with more than 60 dark sky parks, ... near the Columbia Icefield. During the day, visitors experience sculptural, blue-hued ice ...

It is a glow-in-the-dark night sky too, coloured a mix of green, yellow and red. Its colours result from scattered sunlight, oxygen, and sodium from shooting stars.