But the behavior of these lab-based cloud particles mimics the behavior of cloud particles in massive sky-sweeping clouds, only in miniature. “Of course, we don’t grow them at quite the same scale you ...

Scientists are once again astounded by NASA’s Mars Odyssey spacecraft, which took a stunning picture of Arsia Mons, one of ...

The scale used is eighths, or oktas, with observers standing in an open space or on a rooftop to get a good view or panorama ... cloud amount is, not surprisingly, 8 oktas. A clear blue sky ...

The fleeting glow of noctilucent clouds is once again making its appearance in Earth’s upper atmosphere, signaling the start of the 2025 viewing season. These shimmering blue formations, also known as ...

If you’ve noticed some strange blue clouds in the night sky recently, you’re not alone. Uncharacteristically blue nighttime clouds, usually seen over polar regions, have been visible as far ...

But as the planet warms, our main defence against the sun’s fierce heat is weakening AMONG the ranks of fluffy clouds stretching across the summer sky, one catches your eye. There is something ...

Bright blue-white noctilucent clouds danced over the town of Nykøbing Mors in Denmark just before dawn, just when this spectacular photo was taken. Night sky photographer Ruslan Merzlyakov ...

On Saturday, in Washington, November flung off the gray mask it wore on Friday and once more dazzled the city with the glories of late autumn, with blue ... many clouds shared the sky, they ...