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 ...