Noctilucent clouds, Earth's highest clouds, shine blue in the twilight sky from late May to August in the northern hemisphere ...

Noctilucent cloud season is upon us. If you’re in the Northern Hemisphere this summer, keep your head to the skies at sunset ...

Noctilucent clouds usually form close to the poles, but in recent decades, they’re being spotted closer to the Equator ...

The robotic rover caught the rays of the descending sun as it started a new ... These twilight clouds are at a higher altitude where the sky over Mars is especially cold indicating that the ...

You get to feel comfortable under the night sky ... the sun when it’s behind a cloud—a sight so familiar that when little kids draw the sun, they usually depict it emanating rays of light.

A note overlaid on the video says, "Never in my life have I seen a cloud so big it blocks the sunrise all the way across the sky ... "Because the sun is near the horizon—it's sunset—it's ...

As part of its ongoing study of Mars’ clouds ... of a Martian sunset. As the Sun sinks over the horizon, its light forms into sun rays that can be seen banding across the sky.

Summer temperatures have settled in across Connecticut this week, peaking with our first 90-degree day of the year on Thursday. Wednesday will be another nice day as temperatures continue their ...

they were touched by the last long rays of the sun, and they were painted red-orange fire. As the long bands of clouds seemed to lie one atop the other, the western sky became for a few minutes a ...

The setting sun ... after sunset, clouds towered thousands of feet into the air over western Iowa, casting shadows dozens of miles to the east. Vickie Constanzo’s shot of crepuscular rays ...