I've been to both the Blue Lagoon and the Sky Lagoon in Iceland, but there's only one I'd go back to again and again.

Dulux color Bright Skies compared against a clear blue sky near the horizon with hardly any water vapor (left) and a cloudier sky indicating higher levels of water vapour (right).

In the spring and summer, you’re more likely going to see a light blue sky. Sometimes, it’s kind of a milky appearance, and some days, it can be so light it almost looks white.

If you stood on the surface of Pluto, you'd be looking up at a blue sky, just like on Earth. The blue halo of Pluto's atmospheric haze stands out in the newest colour photos sent home by the New ...

That’s why a startup called Blue Water Satellite is leveraging the U.S. government’s Landsat satellite along with a number of private satellites to hunt for the location and concentration of ...

The writer recalls very vividly the blue aspect of the sky as seen from the top of the San Francisco Mountains in Arizona, which have an altitude of 13,000 feet above the sea; and in an ascent of ...

The first color images returned of Pluto by NASA's New Horizons spacecraft reveal blue skies and surface water-ice deposits.