When the Sun ... blue sky is a testament to the elegance of the natural world. The next time you look up on a clear day, pause for a moment to appreciate the science that transforms sunlight ...

The fleeting glow of noctilucent clouds is once again making its appearance in Earth’s upper atmosphere, signaling the start ...

This is why blue and violet light reaches our eyes from all directions on a clear ... sunlight passes through more air at sunset and sunrise than during the day, when the sun is higher in the sky.

I pick out North America’s celestial highlights for the week ahead (which also apply to mid-northern latitudes in the ...

When you go outside on a clear, moonless night ... so anywhere you look in the sky, you’ll see sunlight directed toward you. Complicated physics makes these molecules scatter more blue light ...

As the sun sets, the heavens above are like cotton candy: lighting up with a beautiful display of deep reds, vibrant oranges, and intense pinks. Simply put, the sky seems to be on fire.

The planets offer exciting views in April. Jupiter is a brilliant object in the evening sky, although the observing window narrows as the Sun sets later each day. Mars is past its best, but ...

Friday in Washington was the coolest day in weeks, and the wettest as well, but in time it showed moments of spring splendor, ...

The reddish hue of the moon, often called a "Blood Moon," was visible alongside stars due to the unusually clear ... reflects the sun's rays. Though the Earth blocks any direct sunlight from ...

Our weather pattern could not have cleared up at a better time for the start of the North Iowa Band Festival in Mason City!