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

The blue-silver streaks shine brightly ... “They’re really remarkable to see,” said Deland. “The clouds really just shine against the dark sky.” This week, sky watchers in the upper ...

The clip posted by @verivanessa shows a large cloud at sunrise appearing to sit just above the horizon, with a long, dark rectangular beam stretching across an orange-pink sky. A note overlaid on ...

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 ...

Storm clouds come in many shapes and sizes ... The sun is still shining but, the sky is extremely dark to the west. Pitch black, as many would call it. I remember growing up seeing this type ...

The origin of our sun, and all the planets, comets and asteroids that orbit it, can be traced back to their birthplace inside a massive cloud of cold gas and dust, not unlike the billowing molecular ...

Instead, a thick blanket of clouds kept the sky in shades of gray. But while we couldn’t see the sun from the ground, satellites peering down from space captured something remarkable—dark ...

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 ...