On hearing the word sky, a blue sheet appears in front of the eyes. But have you ever wondered why the sky is blue? And when ...

Stupid question, but” is a column answering the not-so-stupid questions that, at this point, we’re all too afraid to ask. The ...

A stunning blue light likely caused by SpaceX Falcon 9 rocket fuel illuminated the night skies over Europe on Monday.

Why is the sky blue in colour? The colour of the sky is ... whereas blue light has a shorter wavelength compared to red light, which has a longer wavelength. When sunlight passes through the ...

Blue light gets scattered in the atmosphere, which is why the sky is blue. Only the red portion of the light spectrum cuts through to reach the lunar surface. "It's as if all the world's sunrises ...