On a bright, clear day, the sky stretches above us in a brilliant shade of blue. But have you ever wondered why? The answer lies in a fascinating phenomenon known as Rayleigh scattering ...

The area's best stargazing is generally farther east and near the ocean, says Karl Silverberg, vice president of ...

Around 9:45 p.m., a bright blue-green ball flew across the sky. Eyewitness reports came in from as far as Georgia, the Carolinas and Missouri. It's likely that the path was over central Kentucky.

It was SO close.” Someone in Foster City said they were looking at the sky hoping for shooting stars when they saw “a very bright blue light falling from the sky.” “Way bigger than ...

So much about Saturday’s weather in Washington — the spring warmth, the dry air, the bright blue sky — seemed so delightful that finding any lapses from perfection may have seemed too much ...

bright blue spiral spotted over Europe on Monday night sparked chatter on social media about what might have caused the mysterious vortex. Videos posted on X showed a blue orb in the night sky ...