P.M. EDT, marking the official beginning of summer for those in the Northern Hemisphere. On this date, the Sun is located ...

Have you ever gazed up at the sky and wondered why clouds look so incredibly different from one another? One moment, you spot ...

The best time to see noctilucent clouds is on clear nights between late May and mid-August, about 90 to 120 minutes after sunset or before sunrise. Sightings are most common during June and July.

In the sunshine, it seemed even warmer, and although many clouds shared the sky ... blue skies, strong winds, swift-sailing clouds and, at daylight’s end, a blazing spectacle of a sunset.

Aurora chaser and photographer Harlan Thomas ( @TheAuroraGuy) was about 18.5 miles (30 kilometers) north of Calgary along a ...

Violet and blue have the shortest wavelengths ... Clouds also affect what a sunset will look like. If the sky is full of clouds and overcast, from the ground you won’t see that pretty of ...

Fireflies need darkness to communicate. Males perform an airborne dance while flashing their abdominal lanterns in a pattern ...

The phenomenon of scattering is also why the sky turns red, orange, and pink at sunset. Crucially, you need some cloud to see this. The science is the same, with short-wavelength blue and violet ...

The origins of noctilucent clouds are still mysterious. Unlike other spectacular night sky displays like aurora borealis, which have been observed for millenia, there are no reported sightings of ...

See, here on Earth, the blue light scatters more throughout the day, causing the blue appearance of the sky. On Earth, the red and orange lights scatter more throughout the sunset and sunrise ...