BUT MAN, MODESTO TRACY OVER TOWARDS THE BAY AREA JUST HASN’T BEEN MUCH IN THE WAY OF BLUE SKY THIS AFTERNOON. AND THAT’S ...

D ay 13 of the 2024 Space Telescope Advent Calendar: a cloud in the deep sky. This image, featuring the central region of the Chameleon I dark molecular cloud, about 630 light-yea ...

"Just as blue sunlight scatters in the Earth's atmosphere and makes the sun look slightly less blue, light from a strong blue ...

We had a special treat Wednesday morning due to noctilucent clouds that are rarely seen ... particles efficiently scatters shorter blue wavelengths of light. Hence the term "noctilucent," which ...

glowing blue spiral in the sky. Images and videos posted to social media showed the strange cloud-like phenomenon, with users wondering what caused the intriguing sight. The UK Met Office, ...